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 (
    87336, 87337, 87348, 87349, 89775, 90902, 
    90903, 90981, 90982, 86603, 86672, 
    84642, 82611, 85374, 85375, 86482, 
    86484, 86758, 86760, 85280, 85377, 
    85428, 85479, 86461, 86462, 86737, 
    86738, 90745, 90748, 90751, 90754, 
    82638, 83535, 84646, 85130, 83582, 
    83583, 83584, 83585, 86479, 86755, 
    91118, 91119, 91204, 91205, 91259, 
    91260, 82615
  ) 
  AND cscart_product_descriptions.lang_code = 'en'

Query time 0.00122

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "26.88"
    },
    "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": 48,
      "rows_produced_per_join": 48,
      "filtered": "100.00",
      "cost_info": {
        "read_cost": "22.08",
        "eval_cost": "4.80",
        "prefix_cost": "26.88",
        "data_read_per_join": "183K"
      },
      "used_columns": [
        "product_id",
        "lang_code",
        "short_description",
        "full_description"
      ],
      "attached_condition": "((`nuie_scalesta_net`.`cscart_product_descriptions`.`product_id` in (87336,87337,87348,87349,89775,90902,90903,90981,90982,86603,86672,84642,82611,85374,85375,86482,86484,86758,86760,85280,85377,85428,85479,86461,86462,86737,86738,90745,90748,90751,90754,82638,83535,84646,85130,83582,83583,83584,83585,86479,86755,91118,91119,91204,91205,91259,91260,82615)) and (`nuie_scalesta_net`.`cscart_product_descriptions`.`lang_code` = 'en'))"
    }
  }
}

Result

product_id short_description full_description
82611 nuie Arno 1200mm Wall Hung 4-Door Vanity & Worktop - Gloss White
82615 nuie Arno 600mm Wall Hung 2-Drawer Vanity & Thin-Edge Basin - Gloss White
82638 nuie Arno 800mm Wall Hung 2-Drawer Vanity & Worktop - Gloss White
83535 nuie Athena Wall Hung 2 Drawer Vanity With Worktop 800mm - Gloss White
83582 nuie Athena Wall Hung 1 Drawer Vanity with Ceramic Mid-Edge Basin and Handle 600mm - Gloss Grey/Matt Black
83583 nuie Athena Wall Hung 1 Drawer Vanity with Ceramic Mid-Edge Basin and Handle 600mm - Gloss Grey/Brushed Brass
83584 nuie Athena Wall Hung 1 Drawer Vanity with Ceramic Mid-Edge Basin and Handle 600mm - Gloss Grey/Matt Black
83585 nuie Athena Wall Hung 1 Drawer Vanity with Ceramic Mid-Edge Basin and Handle 600mm - Gloss Grey/Chrome
84642 Hudson Reed Fusion Floor Standing WC Unit & Polymarble Top Compact 600mm - Gloss Grey
84646 Hudson Reed Fusion Floor Standing 1 Door Vanity Unit & Polymarble Basin Compact 400mm - Gloss Grey
85130 Hudson Reed Fluted 800mm Wall Hung Single Drawer Vanity and Laminate Top - Satin White
85280 nuie Deco 500mm Floor Standing 2-Door Vanity & Curved Basin - Satin Anthracite
85374 nuie Deco 800mm Wall Hung Single Drawer Vanity & Laminate Top - Satin White
85375 nuie Deco 800mm Wall Hung Single Drawer Vanity & Laminate Top - Satin White
85377 nuie Deco 500mm Floor Standing 2-Door Vanity & Curved Basin - Satin Grey
85428 nuie Deco 500mm Floor Standing 2-Door Vanity & Curved Basin - Satin Blue
85479 nuie Deco 500mm Floor Standing 2-Door Vanity & Curved Basin - Satin Green
86461 Hudson Reed Juno 500mm Floor Standing 2-Door Vanity & Mid-Edge 1 Tap Hole Basin - Autumn Oak
86462 Hudson Reed Juno 500mm Floor Standing 2-Door Vanity & Minimalist 1 Tap Hole Basin - Autumn Oak
86479 Hudson Reed Juno 600mm Wall Hung Single Drawer Vanity & Mid-Edge 1 Tap Hole Basin - Autumn Oak
86482 Hudson Reed Juno 600mm Wall Hung Single Drawer Vanity & Thin-Edge 1 Tap Hole Basin - Autumn Oak
86484 Hudson Reed Juno 600mm Wall Hung Single Drawer Vanity & Curved 1 Tap Hole Basin - Autumn Oak
86603 Hudson Reed Juno 600mm Floor Standing 2-Door Vanity & Mid-Edge 1 Tap Hole Basin - Graphite Grey
86672 Hudson Reed Juno 600mm Floor Standing 2-Door Vanity & Mid-Edge 1 Tap Hole Basin - Coastal Grey
86737 Hudson Reed Juno Floor Standing 2 Door Vanity Basin Unit & Mid-Edge Ceramic Basin, 500mm - Metallic Slate
86738 Hudson Reed Juno Floor Standing 2 Door Vanity Basin Unit & Minimalist Ceramic Basin, 500mm - Metallic Slate
86755 Hudson Reed Juno Wall Hung 1 Drawer Vanity Basin Unit & Mid-Edge Ceramic Basin, 600mm - Metallic Slate
86758 Hudson Reed Juno Wall Hung 1 Drawer Vanity Basin Unit & Thin-Edge Ceramic Basin, 600mm - Metallic Slate
86760 Hudson Reed Juno Wall Hung 1 Drawer Vanity Basin Unit & Curved Ceramic Basin, 600mm - Metallic Slate
87336 nuie Lunar Wall Hung 1 Drawer Unit & Polymarble Basin, 600mm - Satin Blue
87337 nuie Lunar Wall Hung 1 Drawer Unit & Ceramic Basin, 600mm - Satin Blue
87348 nuie Lunar Wall Hung 1 Drawer Unit & Polymarble Basin, 600mm - Satin Green
87349 nuie Lunar Wall Hung 1 Drawer Unit & Ceramic Basin, 600mm - Satin Green
89775 Hudson Reed Urban Wall Hung 2 Drawer Vanity Unit with Worktop 800mm - Satin White
90745 Nuie Deco 500mm Floor Standing 2 Door Vanity & Basin 3 - Satin Anthracite
90748 Nuie Deco 500mm Floor Standing 2 Door Vanity & Basin 3 - Satin Grey
90751 Nuie Deco 500mm Floor Standing 2 Door Vanity & Basin 3 - Satin Blue
90754 Nuie Deco 500mm Floor Standing 2 Door Vanity & Basin 3 - Satin Green
90902 nuie Arno Wall Hung 1 Drawer Vanity & Laminate Worktop, 800mm - Satin Anthracite/Sparkle Black
90903 nuie Arno Wall Hung 1 Drawer Vanity & Laminate Worktop, 800mm - Satin Anthracite/Sparkle White
90981 nuie Arno Wall Hung 1 Drawer Vanity & Laminate Worktop, 800mm - Satin Grey/Sparkle Black
90982 nuie Arno Wall Hung 1 Drawer Vanity & Laminate Worktop, 800mm - Satin Grey/Sparkle White
91118 nuie Classique Wall Hung 1 Drawer Unit & 1 Tap Hole Fireclay Basin, 600mm - Satin Anthracite
91119 nuie Classique Wall Hung 1 Drawer Unit & 3 Tap Hole Fireclay Basin, 600mm - Satin Anthracite
91204 nuie Classique Wall Hung 1 Drawer Unit & 1 Tap Hole Fireclay Basin, 600mm - Satin Grey
91205 nuie Classique Wall Hung 1 Drawer Unit & 3 Tap Hole Fireclay Basin, 600mm - Satin Grey
91259 nuie Classique Wall Hung 1 Drawer Unit & 1 Tap Hole Fireclay Basin, 600mm - Satin Green
91260 nuie Classique Wall Hung 1 Drawer Unit & 3 Tap Hole Fireclay Basin, 600mm - Satin Green