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 (
    92136, 92137, 84026, 84027, 84028, 84029, 
    85580, 89486, 89014, 84018, 84019, 
    84020, 84021, 92019, 92020, 92021, 
    92022, 92023, 92024, 92025, 92107, 
    92108, 92109, 92110, 92111, 92112, 
    92113, 89626, 89639, 83097, 92151, 
    92152, 92153, 92353, 92354, 92355, 
    92356, 89651, 89652, 84103, 83974, 
    83975, 83976, 83977, 84014, 84015, 
    84016, 84017, 84036, 88933, 89011, 
    89523, 90109, 91308, 91893, 91894, 
    91895, 92050, 92138, 92337, 92338, 
    92339, 92340, 83954, 83956, 83958, 
    83960, 90061, 85531, 89623, 89636, 
    83978, 83979, 83980, 83981, 90106, 
    88936, 89648, 89649, 83970, 83971, 
    83972, 83973, 89620, 89633, 91304, 
    83982, 83983, 83984, 83985, 91300, 
    89650, 89187, 90067, 90081, 91839
  ) 
  AND cscart_product_descriptions.lang_code = 'en'

Query time 0.00161

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 (92136,92137,84026,84027,84028,84029,85580,89486,89014,84018,84019,84020,84021,92019,92020,92021,92022,92023,92024,92025,92107,92108,92109,92110,92111,92112,92113,89626,89639,83097,92151,92152,92153,92353,92354,92355,92356,89651,89652,84103,83974,83975,83976,83977,84014,84015,84016,84017,84036,88933,89011,89523,90109,91308,91893,91894,91895,92050,92138,92337,92338,92339,92340,83954,83956,83958,83960,90061,85531,89623,89636,83978,83979,83980,83981,90106,88936,89648,89649,83970,83971,83972,83973,89620,89633,91304,83982,83983,83984,83985,91300,89650,89187,90067,90081,91839)) and (`nuie_scalesta_net`.`cscart_product_descriptions`.`lang_code` = 'en'))"
    }
  }
}