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 (
    87241, 87244, 87245, 87246, 87249, 87250, 
    87251, 86894, 92232, 92233, 92234, 
    92235, 92236, 92238, 92468, 92472, 
    92473, 92474, 84240, 88588, 84239, 
    92212, 92213, 92214, 92215, 92217, 
    92223, 92465, 92466, 92191, 84238, 
    92228, 92229, 92230, 92231, 92237, 
    92469, 92470, 92471, 91865, 85585, 
    92366, 92367, 92368, 92369, 92370, 
    92371, 92372, 91892, 92150, 84254, 
    84259, 87577, 87592, 87607, 88788, 
    92197, 92457, 85646, 91866, 91867, 
    92325, 92326, 92327, 92328, 90054, 
    90056, 90057, 84252, 84253, 84257, 
    84258, 87575, 87576, 87590, 87591, 
    87605, 87606, 88786, 88787, 85578, 
    87656, 87670, 87677, 87684, 87705, 
    87716, 87717, 87730, 87731, 90022, 
    90024, 90038, 90040, 90041, 92440
  ) 
  AND cscart_product_descriptions.lang_code = 'en'

Query time 0.00162

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 (87241,87244,87245,87246,87249,87250,87251,86894,92232,92233,92234,92235,92236,92238,92468,92472,92473,92474,84240,88588,84239,92212,92213,92214,92215,92217,92223,92465,92466,92191,84238,92228,92229,92230,92231,92237,92469,92470,92471,91865,85585,92366,92367,92368,92369,92370,92371,92372,91892,92150,84254,84259,87577,87592,87607,88788,92197,92457,85646,91866,91867,92325,92326,92327,92328,90054,90056,90057,84252,84253,84257,84258,87575,87576,87590,87591,87605,87606,88786,88787,85578,87656,87670,87677,87684,87705,87716,87717,87730,87731,90022,90024,90038,90040,90041,92440)) and (`nuie_scalesta_net`.`cscart_product_descriptions`.`lang_code` = 'en'))"
    }
  }
}

Result

product_id short_description full_description
84238 nuie Athena Straight Front Panel & Plinth 1500mm - White
84239 nuie Athena Straight Front Panel & Plinth 1600mm - White
84240 nuie Athena Straight Front Panel & Plinth 1700mm - White
84252 Hudson Reed 700mm Straight Bath End Panel & Plinth - Satin Anthracite
84253 Hudson Reed 750mm Straight Bath End Panel & Plinth - Satin Anthracite
84254 Hudson Reed 800mm Straight Bath End Panel & Plinth - Satin Anthracite
84257 Hudson Reed 700mm Straight Bath End Panel & Plinth - Satin Green
84258 Hudson Reed 750mm Straight Bath End Panel & Plinth - Satin Green
84259 Hudson Reed 800mm Straight Bath End Panel & Plinth - Satin Green
85578 Shallow Seal Trap
85585 Classic Exposed Bath Waste & Overflow
85646 Ornate Cistern Brackets
86894 Traditional Shower Tidy
87241 Old London Straight Bath End Panel 800mm - Twilight Blue
87244 Old London Straight Bath End Panel 700mm - Timeless Sand
87245 Old London Straight Bath End Panel 750mm - Timeless Sand
87246 Old London Straight Bath End Panel 800mm - Timeless Sand
87249 Old London Straight Bath End Panel 700mm - Hunter Green
87250 Old London Straight Bath End Panel 750mm - Hunter Green
87251 Old London Straight Bath End Panel 800mm - Hunter Green
87575 Hudson Reed Urban Bath End Panel 700mm - Satin White
87576 Hudson Reed Urban Bath End Panel 750mm - Satin White
87577 Hudson Reed Urban Bath End Panel 800mm - Satin White
87590 Hudson Reed Urban Bath End Panel 700mm - Satin Grey
87591 Hudson Reed Urban Bath End Panel 750mm - Satin Grey
87592 Hudson Reed Urban Bath End Panel 800mm - Satin Grey
87605 Hudson Reed Urban Bath End Panel 700mm - Satin Blue
87606 Hudson Reed Urban Bath End Panel 750mm - Satin Blue
87607 Hudson Reed Urban Bath End Panel 800mm - Satin Blue
87656 Hudson Reed 800mm Straight Bath End Panel & Plinth - Autumn Oak
87670 Hudson Reed 800mm Straight Bath End Panel & Plinth - Graphite Grey
87677 Hudson Reed 800mm Straight Bath End Panel & Plinth - Coastal Grey
87684 Hudson Reed Havana Straight Shower Bath End Panel & Plinth, 800mm - Metallic Slate
87705 nuie 800mm Straight End Panel & Plinth - Solace Oak Woodgrain
87716 Hudson Reed Fusion Bath End Panel 800mm - Anthracite Woodgrain
87717 nuie 800mm Straight End Panel & Plinth - Anthracite Woodgrain
87730 Hudson Reed Fusion Bath End Panel 800mm - Hacienda Black
87731 nuie 800mm Straight End Panel & Plinth - Charcoal Black Woodgrain
88588 Hudson Reed Fusion Bath Front Panel & Plinth 1700mm - Gloss White
88786 Hudson Reed Fusion Straight Bath End Panel & Plinth 700mm - Gloss Grey
88787 Hudson Reed Fusion Straight Bath End Panel & Plinth 750mm - Gloss Grey
88788 Hudson Reed Fusion Bath End Panel 800mm - Gloss Grey
90022 nuie Bath Panels B-Shape Shower Bath Front Panel 1700mm - White
90024 nuie Bath Panels B-Shape Shower Bath Front Panel 1500mm - White
90038 nuie Bath Panels P-Shape Shower Bath Front Panel 1700mm - White
90040 nuie Bath Panels P-Shape Shower Bath Front Panel 1500mm - White
90041 nuie Bath Panels P-Shape Shower Bath Front Panel 1600mm - White
90054 nuie Bath Panels L-Shape Shower Bath Front Panel 1700mm - White
90056 nuie Bath Panels L-Shape Shower Bath Front Panel 1500mm - White
90057 nuie Bath Panels L-Shape Shower Bath Front Panel 1600mm - White
91865 BC Designs Victrion Glass Gallery Shelf - Copper
91866 BC Designs Victrion Glass Gallery Shelf - Gold
91867 BC Designs Victrion Glass Gallery Shelf - Nickel
91892 BC Designs Victrion 3 Tier Towel Rack - Chrome
92150 BC Designs Standpipes Traditional Bath Legs with Adjustable Shrouds - Chrome
92191 BC Designs Bath Wastes Plug & Chain Exposed Ext Bath Waste - Chrome
92197 BC Designs Bath Wastes Push Down Concealed Bath Waste - Chrome
92212 BC Designs Bath Wastes Push Down Bath Waste 70mm (Slotted) - Brushed Chrome
92213 BC Designs Bath Wastes Push Down Bath Waste 70mm (Slotted) - Brushed Gold
92214 BC Designs Bath Wastes Push Down Bath Waste 70mm (Slotted) - Brushed Nickel
92215 BC Designs Bath Wastes Push Down Bath Waste 70mm (Slotted) - Black Silk
92217 BC Designs Bath Wastes Push Down Bath Waste 70mm (Slotted) - Gold
92223 BC Designs Bath Wastes Push Down Bath Waste 70mm (Slotted) - Nickel
92228 BC Designs Bath Wastes Push Down Bath Waste 60mm (Unslotted) - Brushed Gold
92229 BC Designs Bath Wastes Push Down Bath Waste 60mm (Unslotted) - Brushed Nickel
92230 BC Designs Bath Wastes Push Down Bath Waste 60mm (Unslotted) - Black Silk
92231 BC Designs Bath Wastes Push Down Bath Waste 60mm (Unslotted) - Copper
92232 BC Designs Bath Wastes Push Down Bath Waste 60mm (Unslotted) - Light Fawn
92233 BC Designs Bath Wastes Push Down Bath Waste 60mm (Unslotted) - Gunmetal
92234 BC Designs Bath Wastes Push Down Bath Waste 60mm (Unslotted) - Industrial Grey
92235 BC Designs Bath Wastes Push Down Bath Waste 60mm (Unslotted) - Khaki Green
92236 BC Designs Bath Wastes Push Down Bath Waste 60mm (Unslotted) - Mushroom
92237 BC Designs Bath Wastes Push Down Bath Waste 60mm (Unslotted) - Nickel
92238 BC Designs Bath Wastes Push Down Bath Waste 60mm (Unslotted) - Satin Rose
92325 BC Designs Victrion Gallery Shelf - Brushed Chrome
92326 BC Designs Victrion Gallery Shelf - Brushed Copper
92327 BC Designs Victrion Gallery Shelf - Brushed Gold
92328 BC Designs Victrion Gallery Shelf - Brushed Nickel
92366 BC Designs Basin Bottle Trap - Brushed Chrome
92367 BC Designs Basin Bottle Trap - Brushed Copper
92368 BC Designs Basin Bottle Trap - Brushed Gold
92369 BC Designs Basin Bottle Trap - Brushed Nickel
92370 BC Designs Basin Bottle Trap - Copper
92371 BC Designs Basin Bottle Trap - Gold
92372 BC Designs Basin Bottle Trap - Nickel
92440 BC Designs Plug & Chain Concealed Bath Waste - Brushed Copper
92457 BC Designs Exposed Bath Trap With Adapter (40/42mm) - Chrome
92465 BC Designs Push Down Bath Waste 70mm (Slotted) - Brushed Copper
92466 BC Designs Push Down Bath Waste 70mm (Slotted) - Copper
92468 BC Designs Push Down Bath Waste 60mm (Unslotted) - Powder Blue
92469 BC Designs Push Down Bath Waste 60mm (Unslotted) - Brushed Chrome
92470 BC Designs Push Down Bath Waste 60mm (Unslotted) - Brushed Copper
92471 BC Designs Push Down Bath Waste 60mm (Unslotted) - Gold
92472 BC Designs Push Down Bath Waste 60mm (Unslotted) - Matt White
92473 BC Designs Push Down Bath Waste 60mm (Unslotted) - Powder Grey
92474 BC Designs Push Down Bath Waste 60mm (Unslotted) - Polished White