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 (
    92401, 92402, 92403, 92404, 92405, 92406, 
    92407, 92400, 92417, 92418, 92419, 
    92420, 92421, 92422, 92416, 85647, 
    88094, 88093, 89173, 90321, 90322, 
    92424, 92425, 92426, 92427, 92428, 
    92429, 92431, 92432, 92433, 92434, 
    92435, 92436, 92437, 92438, 87252, 
    87253, 87254, 87255, 87256, 87257, 
    87258, 87259, 88102, 88103, 90325, 
    92409, 92410, 92411, 92412, 92413, 
    92414, 92415, 85599, 92430, 92439, 
    90324, 90326, 85596, 90323, 85598, 
    90329, 90330, 90331, 90333, 90334, 
    90337, 90338, 90339, 90340, 90341, 
    90342, 90345, 90346, 90347, 90348, 
    85590, 85595, 84775, 84779, 84788, 
    84797, 85643, 88070, 88394, 90328, 
    90332, 90335, 90336, 90343, 90344, 
    85586, 87962, 88079, 88084, 90327
  ) 
  AND cscart_product_descriptions.lang_code = 'en'

Query time 0.00074

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "43.24"
    },
    "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": 96,
      "rows_produced_per_join": 96,
      "filtered": "100.00",
      "cost_info": {
        "read_cost": "33.64",
        "eval_cost": "9.60",
        "prefix_cost": "43.24",
        "data_read_per_join": "366K"
      },
      "used_columns": [
        "product_id",
        "lang_code",
        "short_description",
        "full_description"
      ],
      "attached_condition": "((`nuie_scalesta_net`.`cscart_product_descriptions`.`product_id` in (92401,92402,92403,92404,92405,92406,92407,92400,92417,92418,92419,92420,92421,92422,92416,85647,88094,88093,89173,90321,90322,92424,92425,92426,92427,92428,92429,92431,92432,92433,92434,92435,92436,92437,92438,87252,87253,87254,87255,87256,87257,87258,87259,88102,88103,90325,92409,92410,92411,92412,92413,92414,92415,85599,92430,92439,90324,90326,85596,90323,85598,90329,90330,90331,90333,90334,90337,90338,90339,90340,90341,90342,90345,90346,90347,90348,85590,85595,84775,84779,84788,84797,85643,88070,88394,90328,90332,90335,90336,90343,90344,85586,87962,88079,88084,90327)) and (`nuie_scalesta_net`.`cscart_product_descriptions`.`lang_code` = 'en'))"
    }
  }
}