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SELECT 
  v.product_id, 
  v.feature_id, 
  v.value, 
  v.value_int, 
  v.variant_id, 
  f.feature_type, 
  fd.description, 
  fd.prefix, 
  fd.suffix, 
  vd.variant, 
  f.parent_id, 
  f.position, 
  gf.position as gposition 
FROM 
  cscart_product_features as f 
  LEFT JOIN cscart_product_features_values as v ON v.feature_id = f.feature_id 
  LEFT JOIN cscart_product_features_descriptions as fd ON fd.feature_id = v.feature_id 
  AND fd.lang_code = 'en' 
  LEFT JOIN cscart_product_feature_variants fv ON fv.variant_id = v.variant_id 
  LEFT JOIN cscart_product_feature_variant_descriptions as vd ON vd.variant_id = fv.variant_id 
  AND vd.lang_code = 'en' 
  LEFT JOIN cscart_product_features as gf ON gf.feature_id = f.parent_id 
  AND gf.feature_type = 'G' 
WHERE 
  f.status IN ('A') 
  AND v.product_id in (5923, 5924, 5912, 5943) 
  AND f.display_on_catalog = 'Y' 
  AND (
    f.categories_path = '' 
    OR FIND_IN_SET(166, f.categories_path) 
    OR FIND_IN_SET(250, f.categories_path) 
    OR FIND_IN_SET(328, f.categories_path) 
    OR FIND_IN_SET(402, f.categories_path) 
    OR FIND_IN_SET(564, f.categories_path) 
    OR FIND_IN_SET(565, f.categories_path)
  ) 
  AND IF(
    f.parent_id, 
    (
      SELECT 
        status 
      FROM 
        cscart_product_features as df 
      WHERE 
        df.feature_id = f.parent_id
    ), 
    'A'
  ) IN ('A') 
  AND (
    v.variant_id != 0 
    OR (
      f.feature_type != 'C' 
      AND v.value != ''
    ) 
    OR (f.feature_type = 'C') 
    OR v.value_int != ''
  ) 
  AND v.lang_code = 'en' 
ORDER BY 
  fd.description, 
  fv.position

Query time 0.00215

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "69.62"
    },
    "ordering_operation": {
      "using_temporary_table": true,
      "using_filesort": true,
      "nested_loop": [
        {
          "table": {
            "table_name": "v",
            "access_type": "range",
            "possible_keys": [
              "PRIMARY",
              "fl",
              "variant_id",
              "lang_code",
              "product_id",
              "fpl",
              "idx_product_feature_variant_id"
            ],
            "key": "product_id",
            "used_key_parts": [
              "product_id"
            ],
            "key_length": "3",
            "rows_examined_per_scan": 113,
            "rows_produced_per_join": 36,
            "filtered": "32.52",
            "index_condition": "(`softwarepirmam_hewadelivard_cscart_4`.`v`.`product_id` in (5923,5924,5912,5943))",
            "cost_info": {
              "read_cost": "48.19",
              "eval_cost": "3.67",
              "prefix_cost": "51.86",
              "data_read_per_join": "28K"
            },
            "used_columns": [
              "feature_id",
              "product_id",
              "variant_id",
              "value",
              "value_int",
              "lang_code"
            ],
            "attached_condition": "((`softwarepirmam_hewadelivard_cscart_4`.`v`.`lang_code` = 'en') and (`softwarepirmam_hewadelivard_cscart_4`.`v`.`feature_id` is not null))"
          }
        },
        {
          "table": {
            "table_name": "f",
            "access_type": "eq_ref",
            "possible_keys": [
              "PRIMARY",
              "status"
            ],
            "key": "PRIMARY",
            "used_key_parts": [
              "feature_id"
            ],
            "key_length": "3",
            "ref": [
              "softwarepirmam_hewadelivard_cscart_4.v.feature_id"
            ],
            "rows_examined_per_scan": 1,
            "rows_produced_per_join": 3,
            "filtered": "9.53",
            "cost_info": {
              "read_cost": "9.19",
              "eval_cost": "0.35",
              "prefix_cost": "64.72",
              "data_read_per_join": "1K"
            },
            "used_columns": [
              "feature_id",
              "feature_type",
              "categories_path",
              "parent_id",
              "display_on_catalog",
              "status",
              "position"
            ],
            "attached_condition": "((`softwarepirmam_hewadelivard_cscart_4`.`f`.`status` = 'A') and (`softwarepirmam_hewadelivard_cscart_4`.`f`.`display_on_catalog` = 'Y') and ((`softwarepirmam_hewadelivard_cscart_4`.`f`.`categories_path` = '') or (0 <> find_in_set(166,`softwarepirmam_hewadelivard_cscart_4`.`f`.`categories_path`)) or (0 <> find_in_set(250,`softwarepirmam_hewadelivard_cscart_4`.`f`.`categories_path`)) or (0 <> find_in_set(328,`softwarepirmam_hewadelivard_cscart_4`.`f`.`categories_path`)) or (0 <> find_in_set(402,`softwarepirmam_hewadelivard_cscart_4`.`f`.`categories_path`)) or (0 <> find_in_set(564,`softwarepirmam_hewadelivard_cscart_4`.`f`.`categories_path`)) or (0 <> find_in_set(565,`softwarepirmam_hewadelivard_cscart_4`.`f`.`categories_path`))) and (if(`softwarepirmam_hewadelivard_cscart_4`.`f`.`parent_id`,(/* select#2 */ select `softwarepirmam_hewadelivard_cscart_4`.`df`.`status` from `softwarepirmam_hewadelivard_cscart_4`.`cscart_product_features` `df` where (`softwarepirmam_hewadelivard_cscart_4`.`df`.`feature_id` = `softwarepirmam_hewadelivard_cscart_4`.`f`.`parent_id`)),'A') = 'A') and ((`softwarepirmam_hewadelivard_cscart_4`.`v`.`variant_id` <> 0) or ((`softwarepirmam_hewadelivard_cscart_4`.`f`.`feature_type` <> 'C') and (`softwarepirmam_hewadelivard_cscart_4`.`v`.`value` <> '')) or (`softwarepirmam_hewadelivard_cscart_4`.`f`.`feature_type` = 'C') or (`softwarepirmam_hewadelivard_cscart_4`.`v`.`value_int` <> 0)))",
            "attached_subqueries": [
              {
                "dependent": true,
                "cacheable": false,
                "query_block": {
                  "select_id": 2,
                  "cost_info": {
                    "query_cost": "0.35"
                  },
                  "table": {
                    "table_name": "df",
                    "access_type": "eq_ref",
                    "possible_keys": [
                      "PRIMARY"
                    ],
                    "key": "PRIMARY",
                    "used_key_parts": [
                      "feature_id"
                    ],
                    "key_length": "3",
                    "ref": [
                      "softwarepirmam_hewadelivard_cscart_4.f.parent_id"
                    ],
                    "rows_examined_per_scan": 1,
                    "rows_produced_per_join": 1,
                    "filtered": "100.00",
                    "cost_info": {
                      "read_cost": "0.25",
                      "eval_cost": "0.10",
                      "prefix_cost": "0.35",
                      "data_read_per_join": "440"
                    },
                    "used_columns": [
                      "feature_id",
                      "status"
                    ]
                  }
                }
              }
            ]
          }
        },
        {
          "table": {
            "table_name": "fd",
            "access_type": "eq_ref",
            "possible_keys": [
              "PRIMARY"
            ],
            "key": "PRIMARY",
            "used_key_parts": [
              "feature_id",
              "lang_code"
            ],
            "key_length": "9",
            "ref": [
              "softwarepirmam_hewadelivard_cscart_4.v.feature_id",
              "const"
            ],
            "rows_examined_per_scan": 1,
            "rows_produced_per_join": 3,
            "filtered": "100.00",
            "cost_info": {
              "read_cost": "0.88",
              "eval_cost": "0.35",
              "prefix_cost": "65.95",
              "data_read_per_join": "7K"
            },
            "used_columns": [
              "feature_id",
              "description",
              "prefix",
              "suffix",
              "lang_code"
            ]
          }
        },
        {
          "table": {
            "table_name": "fv",
            "access_type": "eq_ref",
            "possible_keys": [
              "PRIMARY"
            ],
            "key": "PRIMARY",
            "used_key_parts": [
              "variant_id"
            ],
            "key_length": "3",
            "ref": [
              "softwarepirmam_hewadelivard_cscart_4.v.variant_id"
            ],
            "rows_examined_per_scan": 1,
            "rows_produced_per_join": 3,
            "filtered": "100.00",
            "cost_info": {
              "read_cost": "0.88",
              "eval_cost": "0.35",
              "prefix_cost": "67.17",
              "data_read_per_join": "3K"
            },
            "used_columns": [
              "variant_id",
              "position"
            ]
          }
        },
        {
          "table": {
            "table_name": "vd",
            "access_type": "eq_ref",
            "possible_keys": [
              "PRIMARY"
            ],
            "key": "PRIMARY",
            "used_key_parts": [
              "variant_id",
              "lang_code"
            ],
            "key_length": "9",
            "ref": [
              "softwarepirmam_hewadelivard_cscart_4.fv.variant_id",
              "const"
            ],
            "rows_examined_per_scan": 1,
            "rows_produced_per_join": 3,
            "filtered": "100.00",
            "cost_info": {
              "read_cost": "0.88",
              "eval_cost": "0.35",
              "prefix_cost": "68.40",
              "data_read_per_join": "10K"
            },
            "used_columns": [
              "variant_id",
              "variant",
              "lang_code"
            ]
          }
        },
        {
          "table": {
            "table_name": "gf",
            "access_type": "eq_ref",
            "possible_keys": [
              "PRIMARY"
            ],
            "key": "PRIMARY",
            "used_key_parts": [
              "feature_id"
            ],
            "key_length": "3",
            "ref": [
              "softwarepirmam_hewadelivard_cscart_4.f.parent_id"
            ],
            "rows_examined_per_scan": 1,
            "rows_produced_per_join": 3,
            "filtered": "100.00",
            "cost_info": {
              "read_cost": "0.88",
              "eval_cost": "0.35",
              "prefix_cost": "69.62",
              "data_read_per_join": "1K"
            },
            "used_columns": [
              "feature_id",
              "feature_type",
              "position"
            ],
            "attached_condition": "<if>(is_not_null_compl(gf), (`softwarepirmam_hewadelivard_cscart_4`.`gf`.`feature_type` = 'G'), true)"
          }
        }
      ]
    }
  }
}

Result

product_id	feature_id	value_int	variant_id	feature_type	description	variant	position
5943	667	0.00	7654	S	Antenna Type	Integrated directional grid, 24.5 dBi, dual polarization	260
5924	667	0.00	7632	S	Antenna Type	Integrated 16 dBi directional	260
5912	667	0.00	7600	S	Antenna Type	Dish reflector / “wire dish” style integrated antenna	260
5923	667	0.00	7624	S	Antenna Type	None, external antennas required	260
5943	657		7483	E	Brand	MIKROTIK	0
5924	657		7483	E	Brand	MIKROTIK	0
5912	657		7483	E	Brand	MIKROTIK	0
5923	657		7483	E	Brand	MIKROTIK	0
5924	656	0.00	7627	S	Color	Light Grey	160
5943	656		1559	S	Color	white	160
5912	656		1559	S	Color	white	160
5923	656		1559	S	Color	white	160
5923	664	0.00	7621	S	Frequency Bands	N/A	230
5912	664	60.00	7597	S	Frequency Bands	60 GHz (single high-frequency band	230
5943	664	5.00	7652	S	Frequency Bands	5 GHz band	230
5924	664		5993	S	Frequency Bands	5 GHz	230
5923	669	0.00	7626	S	Maximum Device Rate	Up to 1.5 million PPS	280
5912	669	18.20	7601	S	Maximum Device Rate	18.2 Gbps	280
5943	669	0.00	7655	S	Maximum Device Rate	Up to ~300 Mbps	280
5924	669	0.00	7634	S	Maximum Device Rate	Approx. 300 Mbps	280
5923	668	0.00	7625	S	Maximum User Capacity	Approx. 500-700 users	270
5943	668		6006	S	Maximum User Capacity	Up to 150 users	270
5924	668	0.00	7633	S	Maximum User Capacity	Approx. 150 users	270
5924	663	0.00	7629	S	Mounting Options	Pole / mast (horizontal or vertical)	220
5923	663	0.00	7620	S	Mounting Options	Pole, Wall, Tower	220
5943	663	0.00	7651	S	Mounting Options	Pole / mast mount, outdoor use	220
5912	663	0.00	7596	S	Mounting Options	Pole mount / outdoor dish mount (outdoor CPE style)	220
5943	665	1.00	7653	S	Network Ports	1 × Gigabit Ethernet (RJ45, PoE in)	240
5923	665	5.00	7622	S	Network Ports	5 × Gigabit Ethernet, 1 × SFP	240
5912	665	1.00	7598	S	Network Ports	1 × Gigabit Ethernet (RJ-45) port	240
5924	665	1.00	7630	S	Network Ports	1 × 10/100 Ethernet (RJ45)	240
5912	666	0.00	7599	S	Power Support	PoE input (802.3af/at) — input voltage range ~12 V to 57 V, Max power consumption: ~7 W	250
5924	666	0.00	7631	S	Power Support	Passive PoE-IN (10–30 V DC, ~6 W)	250
5943	666		7641	S	Power Support	Passive PoE (8–30 V DC)	250
5923	666	0.00	7623	S	Power Support	Passive PoE, 802.3af/at PoE	250
5924	662	0.00	7628	S	Wi-Fi Standard	Wi-Fi 4 (802.11a/n)	210
5943	662	802.11	7650	S	Wi-Fi Standard	802.11a/n (5 GHz)	210
5912	662	802.11	7595	S	Wi-Fi Standard	802.11ad (60 GHz, “WiGig” / 60G band)	210