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 (
    88304, 88305, 89712, 89713, 88302, 88303, 
    89708, 89709, 89710, 89711, 88300, 
    88301, 89706, 89707, 89701, 89702, 
    88296, 88297, 89699, 89700, 88381, 
    88382, 88377, 88378, 88379, 88380, 
    88375, 88376, 88370, 88371, 88368, 
    88369, 94387, 94396, 94397, 94399, 
    94400, 94423, 94424, 94858, 94859, 
    94867, 94868, 94870, 94871, 94896, 
    94897, 94906, 94907, 94916, 94917, 
    94919, 94920, 94945, 94946, 96250, 
    96251, 96260, 96261, 96263, 96264, 
    96290, 96291, 96576, 96581, 96598, 
    96599, 100550, 100559, 100560, 100562, 
    100563, 100589, 100590, 101579, 101580, 
    101589, 101590, 101592, 101593, 101619, 
    101620, 101624
  ) 
  AND cscart_product_descriptions.lang_code = 'en'

Query time 0.00231

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "37.39"
    },
    "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": 83,
      "rows_produced_per_join": 83,
      "filtered": "100.00",
      "cost_info": {
        "read_cost": "29.09",
        "eval_cost": "8.30",
        "prefix_cost": "37.39",
        "data_read_per_join": "316K"
      },
      "used_columns": [
        "product_id",
        "lang_code",
        "short_description",
        "full_description"
      ],
      "attached_condition": "((`nuie_scalesta_net`.`cscart_product_descriptions`.`product_id` in (88304,88305,89712,89713,88302,88303,89708,89709,89710,89711,88300,88301,89706,89707,89701,89702,88296,88297,89699,89700,88381,88382,88377,88378,88379,88380,88375,88376,88370,88371,88368,88369,94387,94396,94397,94399,94400,94423,94424,94858,94859,94867,94868,94870,94871,94896,94897,94906,94907,94916,94917,94919,94920,94945,94946,96250,96251,96260,96261,96263,96264,96290,96291,96576,96581,96598,96599,100550,100559,100560,100562,100563,100589,100590,101579,101580,101589,101590,101592,101593,101619,101620,101624)) and (`nuie_scalesta_net`.`cscart_product_descriptions`.`lang_code` = 'en'))"
    }
  }
}