SELECT 
  cscart_ult_product_descriptions.product_id, 
  cscart_ult_product_descriptions.short_description, 
  IF(
    cscart_ult_product_descriptions.short_description = "", 
    cscart_ult_product_descriptions.full_description, 
    ""
  ) AS full_description, 
  cscart_ult_product_descriptions.meta_keywords, 
  cscart_ult_product_descriptions.meta_description, 
  cscart_ult_product_descriptions.search_words, 
  cscart_ult_product_descriptions.promo_text 
FROM 
  cscart_ult_product_descriptions 
WHERE 
  cscart_ult_product_descriptions.product_id IN (
    1692, 1695, 1694, 1693, 1691, 1690, 1688, 
    1678, 1680, 1681, 1664, 1687, 1685, 
    1684, 1677, 1644, 1674, 1673, 1672, 
    1671, 1670, 1669, 1668, 1667, 1666, 
    1665, 1663, 1660, 1662, 255, 1661, 1658, 
    1657, 1656, 1655, 1654, 1653, 1652, 
    1651, 1650, 1324, 1647, 1646, 1645, 
    1643, 1642, 1641, 1640
  ) 
  AND cscart_ult_product_descriptions.company_id = 1 
  AND cscart_ult_product_descriptions.lang_code = 'en'

Query time 0.00182

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "table_name": "cscart_ult_product_descriptions",
      "access_type": "range",
      "possible_keys": ["PRIMARY", "product_id", "company_id"],
      "key": "PRIMARY",
      "key_length": "13",
      "used_key_parts": ["product_id", "lang_code", "company_id"],
      "rows": 48,
      "filtered": 100,
      "index_condition": "cscart_ult_product_descriptions.company_id = 1 and cscart_ult_product_descriptions.product_id in (1692,1695,1694,1693,1691,1690,1688,1678,1680,1681,1664,1687,1685,1684,1677,1644,1674,1673,1672,1671,1670,1669,1668,1667,1666,1665,1663,1660,1662,255,1661,1658,1657,1656,1655,1654,1653,1652,1651,1650,1324,1647,1646,1645,1643,1642,1641,1640) and cscart_ult_product_descriptions.lang_code = 'en'"
    }
  }
}

Result

product_id short_description full_description meta_keywords meta_description search_words promo_text
255
1324
1640
1641
1642
1643
1644
1645
1646
1647
1650
1651
1652
1653
1654
1655
1656
1657
1658
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1677
1678
1680
1681
1684
1685
1687
1688
1690
1691
1692
1693
1694
1695