SELECT 
  cscart_promotions.*, 
  cscart_promotion_descriptions.name, 
  cscart_promotion_descriptions.detailed_description, 
  cscart_promotion_descriptions.short_description 
FROM 
  cscart_promotions 
  LEFT JOIN cscart_promotion_descriptions ON cscart_promotion_descriptions.promotion_id = cscart_promotions.promotion_id 
  AND cscart_promotion_descriptions.lang_code = 'en' 
  LEFT JOIN cscart_storefronts_promotions AS storefronts_promotions ON storefronts_promotions.promotion_id = cscart_promotions.promotion_id 
WHERE 
  1 
  AND IF(
    from_date, from_date <= 1773229012, 
    1
  ) 
  AND IF(to_date, to_date >= 1773229012, 1) 
  AND status IN ('A', 'H') 
  AND cscart_promotions.zone = 'catalog' 
  AND (
    storefronts_promotions.storefront_id = 1 
    OR storefronts_promotions.storefront_id IS NULL
  ) 
  AND 1 
ORDER BY 
  cscart_promotions.stop_other_rules desc, 
  cscart_promotions.priority asc

Query time 0.00089

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "8.55"
    },
    "ordering_operation": {
      "using_filesort": true,
      "cost_info": {
        "sort_cost": "3.40"
      },
      "nested_loop": [
        {
          "table": {
            "table_name": "storefronts_promotions",
            "access_type": "system",
            "rows_examined_per_scan": 0,
            "rows_produced_per_join": 1,
            "filtered": "0.00",
            "const_row_not_found": true,
            "cost_info": {
              "read_cost": "0.00",
              "eval_cost": "0.10",
              "prefix_cost": "0.00",
              "data_read_per_join": "16"
            },
            "used_columns": [
              "storefront_id",
              "promotion_id"
            ]
          }
        },
        {
          "table": {
            "table_name": "cscart_promotions",
            "access_type": "ALL",
            "rows_examined_per_scan": 34,
            "rows_produced_per_join": 3,
            "filtered": "10.00",
            "cost_info": {
              "read_cost": "4.48",
              "eval_cost": "0.34",
              "prefix_cost": "4.82",
              "data_read_per_join": "272"
            },
            "used_columns": [
              "promotion_id",
              "company_id",
              "conditions",
              "bonuses",
              "to_date",
              "from_date",
              "priority",
              "stop",
              "stop_other_rules",
              "zone",
              "conditions_hash",
              "status",
              "number_of_usages",
              "users_conditions_hash"
            ],
            "attached_condition": "((0 <> if(`softwarepirmam_hewadelivard_cscart_4`.`cscart_promotions`.`from_date`,(`softwarepirmam_hewadelivard_cscart_4`.`cscart_promotions`.`from_date` <= 1773229012),1)) and (0 <> if(`softwarepirmam_hewadelivard_cscart_4`.`cscart_promotions`.`to_date`,(`softwarepirmam_hewadelivard_cscart_4`.`cscart_promotions`.`to_date` >= 1773229012),1)) and (`softwarepirmam_hewadelivard_cscart_4`.`cscart_promotions`.`status` in ('A','H')) and (`softwarepirmam_hewadelivard_cscart_4`.`cscart_promotions`.`zone` = 'catalog'))"
          }
        },
        {
          "table": {
            "table_name": "cscart_promotion_descriptions",
            "access_type": "eq_ref",
            "possible_keys": [
              "PRIMARY"
            ],
            "key": "PRIMARY",
            "used_key_parts": [
              "promotion_id",
              "lang_code"
            ],
            "key_length": "9",
            "ref": [
              "softwarepirmam_hewadelivard_cscart_4.cscart_promotions.promotion_id",
              "const"
            ],
            "rows_examined_per_scan": 1,
            "rows_produced_per_join": 3,
            "filtered": "100.00",
            "cost_info": {
              "read_cost": "0.00",
              "eval_cost": "0.34",
              "prefix_cost": "5.16",
              "data_read_per_join": "2K"
            },
            "used_columns": [
              "promotion_id",
              "name",
              "short_description",
              "detailed_description",
              "lang_code"
            ]
          }
        }
      ]
    }
  }
}