SELECT 
  cscart_product_descriptions.product_id, 
  cscart_product_descriptions.short_description, 
  IF(
    cscart_product_descriptions.short_description = '' 
    OR cscart_product_descriptions.short_description IS NULL, 
    cscart_product_descriptions.full_description, 
    ''
  ) AS full_description 
FROM 
  cscart_product_descriptions 
WHERE 
  cscart_product_descriptions.product_id IN (
    95056, 95333, 95334, 95335, 95336, 95337, 
    95338, 95339, 95340, 95343, 95347, 
    95348, 95350, 95351, 95353, 95354, 
    95355, 95514, 95515, 95516, 95520, 
    95521, 95522, 95530, 95531, 95532, 
    95546, 95547, 95548, 96190, 96783, 
    96784, 96807, 96808, 96809, 96810, 
    96811, 96812, 96813, 96814, 96815, 
    96816, 96920, 96921, 96922, 96923, 
    96924, 96925
  ) 
  AND cscart_product_descriptions.lang_code = 'en'

Query time 0.00102

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "21.63"
    },
    "table": {
      "table_name": "cscart_product_descriptions",
      "access_type": "range",
      "possible_keys": [
        "PRIMARY",
        "product_id"
      ],
      "key": "PRIMARY",
      "used_key_parts": [
        "product_id",
        "lang_code"
      ],
      "key_length": "9",
      "rows_examined_per_scan": 48,
      "rows_produced_per_join": 48,
      "filtered": "100.00",
      "cost_info": {
        "read_cost": "16.83",
        "eval_cost": "4.80",
        "prefix_cost": "21.63",
        "data_read_per_join": "183K"
      },
      "used_columns": [
        "product_id",
        "lang_code",
        "short_description",
        "full_description"
      ],
      "attached_condition": "((`nuie_scalesta_net`.`cscart_product_descriptions`.`product_id` in (95056,95333,95334,95335,95336,95337,95338,95339,95340,95343,95347,95348,95350,95351,95353,95354,95355,95514,95515,95516,95520,95521,95522,95530,95531,95532,95546,95547,95548,96190,96783,96784,96807,96808,96809,96810,96811,96812,96813,96814,96815,96816,96920,96921,96922,96923,96924,96925)) and (`nuie_scalesta_net`.`cscart_product_descriptions`.`lang_code` = 'en'))"
    }
  }
}