SELECT 
  pfv.variant_id, 
  pfv.position, 
  pfvd.variant 
FROM 
  cscart_product_feature_variants AS pfv 
  INNER JOIN cscart_product_feature_variant_descriptions AS pfvd ON pfv.variant_id = pfvd.variant_id 
  AND pfvd.lang_code = 'ar' 
WHERE 
  pfv.variant_id IN (
    1553, 1563, 1562, 1555, 1554, 1564, 1552, 
    1560, 1561, 1559, 1659, 1558, 1556, 
    1557, 1660, 1587, 1751, 1750, 1526, 
    1748, 1749, 1684, 1687, 1766, 1682, 
    1591, 1773, 1775, 1776, 1774, 1778, 
    1755, 1779, 1780, 1781, 1782, 1785, 
    1786, 1760, 1787, 1788, 1789, 1641, 
    2903, 1596, 1653, 2907, 2908, 2910, 
    1597, 2919, 1600, 2758, 2870, 1599, 
    1598, 2441, 2984, 2985, 1607, 1609, 
    1595, 1592, 2077, 2315, 1761, 1762, 
    1737, 1738, 1739, 1740, 5991, 5563, 
    7521, 7064, 1784, 7534, 7535, 1606, 
    2243, 2443, 1565, 1914, 9180, 1725, 
    9253
  )

Query time 0.00172

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "90.31"
    },
    "nested_loop": [
      {
        "table": {
          "table_name": "pfv",
          "access_type": "range",
          "possible_keys": [
            "PRIMARY"
          ],
          "key": "PRIMARY",
          "used_key_parts": [
            "variant_id"
          ],
          "key_length": "3",
          "rows_examined_per_scan": 86,
          "rows_produced_per_join": 86,
          "filtered": "100.00",
          "index_condition": "(`softwarepirmam_hewadelivard_cscart_4`.`pfv`.`variant_id` in (1553,1563,1562,1555,1554,1564,1552,1560,1561,1559,1659,1558,1556,1557,1660,1587,1751,1750,1526,1748,1749,1684,1687,1766,1682,1591,1773,1775,1776,1774,1778,1755,1779,1780,1781,1782,1785,1786,1760,1787,1788,1789,1641,2903,1596,1653,2907,2908,2910,1597,2919,1600,2758,2870,1599,1598,2441,2984,2985,1607,1609,1595,1592,2077,2315,1761,1762,1737,1738,1739,1740,5991,5563,7521,7064,1784,7534,7535,1606,2243,2443,1565,1914,9180,1725,9253))",
          "cost_info": {
            "read_cost": "51.61",
            "eval_cost": "8.60",
            "prefix_cost": "60.21",
            "data_read_per_join": "98K"
          },
          "used_columns": [
            "variant_id",
            "position"
          ]
        }
      },
      {
        "table": {
          "table_name": "pfvd",
          "access_type": "eq_ref",
          "possible_keys": [
            "PRIMARY"
          ],
          "key": "PRIMARY",
          "used_key_parts": [
            "variant_id",
            "lang_code"
          ],
          "key_length": "9",
          "ref": [
            "softwarepirmam_hewadelivard_cscart_4.pfv.variant_id",
            "const"
          ],
          "rows_examined_per_scan": 1,
          "rows_produced_per_join": 86,
          "filtered": "100.00",
          "cost_info": {
            "read_cost": "21.50",
            "eval_cost": "8.60",
            "prefix_cost": "90.31",
            "data_read_per_join": "260K"
          },
          "used_columns": [
            "variant_id",
            "variant",
            "lang_code"
          ]
        }
      }
    ]
  }
}