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 (
    95225, 95226, 95228, 95229, 95231, 95233, 
    95235, 95237, 95239, 95241, 95243, 
    95245, 95970, 95971, 95972, 95973, 
    95974, 95975, 95976, 96051, 96053, 
    96055, 96057, 96059, 96061, 96062, 
    96064, 96066, 96068, 96070, 96072, 
    96074, 96076, 96078, 96082, 96083, 
    96086, 96087, 96090, 96091, 96094, 
    96095, 96098, 96099, 96102, 96103, 
    96383, 96384, 96385, 96386, 96387, 
    96388, 96389, 96390, 96391, 96398, 
    96399, 96400, 98600, 98601, 98603, 
    98607, 98609, 98611, 98612, 98613, 
    98616, 98626, 98628, 98630, 98631, 
    98632, 98633, 98635, 98637, 98639, 
    98640, 98641, 98644, 98645, 98646, 
    98647, 98649, 98650, 98652, 98653, 
    98657, 98658, 98659, 98661, 98663, 
    98665, 98666, 98667, 98668, 98669
  ) 
  AND cscart_product_descriptions.lang_code = 'en'

Query time 0.00095

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 (95225,95226,95228,95229,95231,95233,95235,95237,95239,95241,95243,95245,95970,95971,95972,95973,95974,95975,95976,96051,96053,96055,96057,96059,96061,96062,96064,96066,96068,96070,96072,96074,96076,96078,96082,96083,96086,96087,96090,96091,96094,96095,96098,96099,96102,96103,96383,96384,96385,96386,96387,96388,96389,96390,96391,96398,96399,96400,98600,98601,98603,98607,98609,98611,98612,98613,98616,98626,98628,98630,98631,98632,98633,98635,98637,98639,98640,98641,98644,98645,98646,98647,98649,98650,98652,98653,98657,98658,98659,98661,98663,98665,98666,98667,98668,98669)) and (`nuie_scalesta_net`.`cscart_product_descriptions`.`lang_code` = 'en'))"
    }
  }
}