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 (
    91516, 85126, 86183, 86206, 86507, 86783, 
    89078, 85319, 85416, 85467, 85518, 
    82636, 82637, 83533, 83534, 82854, 
    82927, 83000, 83516, 83524, 85365, 
    89070, 83613, 82830, 82903, 82976, 
    85066, 85067, 85152, 85153, 85198, 
    85199, 85244, 85245, 89773, 89774, 
    86138, 86139, 86161, 86162, 86646, 
    86647, 86715, 86716, 86149, 86172, 
    86186, 86209, 86510, 86665, 86734, 
    86786, 83056, 83605, 90892, 90971, 
    85106, 85107, 89824, 89876, 89948, 
    91514, 83059, 83608, 90895, 90974, 
    85322, 85419, 85470, 85521, 82635, 
    83532, 85065, 85151, 85197, 85243, 
    82838, 82839, 82911, 82912, 82984, 
    82985, 83398, 83399, 83408, 83409, 
    85368, 86137, 86160, 86645, 86714, 
    82857, 82930, 83003, 83519, 83527
  ) 
  AND cscart_product_descriptions.lang_code = 'en'

Query time 0.00165

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 (91516,85126,86183,86206,86507,86783,89078,85319,85416,85467,85518,82636,82637,83533,83534,82854,82927,83000,83516,83524,85365,89070,83613,82830,82903,82976,85066,85067,85152,85153,85198,85199,85244,85245,89773,89774,86138,86139,86161,86162,86646,86647,86715,86716,86149,86172,86186,86209,86510,86665,86734,86786,83056,83605,90892,90971,85106,85107,89824,89876,89948,91514,83059,83608,90895,90974,85322,85419,85470,85521,82635,83532,85065,85151,85197,85243,82838,82839,82911,82912,82984,82985,83398,83399,83408,83409,85368,86137,86160,86645,86714,82857,82930,83003,83519,83527)) and (`nuie_scalesta_net`.`cscart_product_descriptions`.`lang_code` = 'en'))"
    }
  }
}

Result

product_id short_description full_description
82635 nuie Arno 800mm Wall Hung 2-Drawer Vanity & Laminate Top - Gloss White
82636 nuie Arno 800mm Wall Hung 2-Drawer Vanity & Laminate Top - Gloss White
82637 nuie Arno 800mm Wall Hung 2-Drawer Vanity & Laminate Top - Gloss White
82830 nuie Arno 1200mm Wall Hung 4-Door Vanity & Worktop - Solace Oak
82838 nuie Arno 600mm Wall Hung 2-Drawer Vanity & Laminate Top - Solace Oak
82839 nuie Arno 600mm Wall Hung 2-Drawer Vanity & Laminate Top - Solace Oak
82854 nuie Arno 800mm Wall Hung 2-Drawer Vanity & Laminate Top - Solace Oak
82857 nuie Arno 800mm Wall Hung 2-Drawer Vanity & Worktop - Solace Oak
82903 nuie Arno 1200mm Wall Hung 4-Door Vanity & Worktop - Anthracite
82911 nuie Arno 600mm Wall Hung 2-Drawer Vanity & Laminate Top - Anthracite
82912 nuie Arno 600mm Wall Hung 2-Drawer Vanity & Laminate Top - Anthracite
82927 nuie Arno 800mm Wall Hung 2-Drawer Vanity & Laminate Top - Anthracite
82930 nuie Arno 800mm Wall Hung 2-Drawer Vanity & Worktop - Anthracite
82976 nuie Arno 1200mm Wall Hung 4-Door Vanity & Worktop - Charcoal Black
82984 nuie Arno 600mm Wall Hung 2-Drawer Vanity & Laminate Top - Charcoal Black
82985 nuie Arno 600mm Wall Hung 2-Drawer Vanity & Laminate Top - Charcoal Black
83000 nuie Arno 800mm Wall Hung 2-Drawer Vanity & Laminate Top - Charcoal Black
83003 nuie Arno 800mm Wall Hung 2-Drawer Vanity & Worktop - Charcoal Black
83056 nuie Arno 600mm Wall Hung 2-Drawer Vanity & Laminate Top - Satin Green
83059 nuie Arno 600mm Wall Hung 2-Drawer Vanity & Worktop - Satin Green
83398 nuie Athena Wall Hung 2 Drawer Vanity With Sparkling Black Worktop 600mm - Anthracite Woodgrain
83399 nuie Athena Wall Hung 2 Drawer Vanity With Sparkling White Worktop 600mm - Anthracite Woodgrain
83408 nuie Athena Wall Hung 2 Drawer Vanity With Sparkling Black Worktop 600mm - Hacienda Black
83409 nuie Athena Wall Hung 2 Drawer Vanity With Sparkling White Worktop 600mm - Hacienda Black
83516 nuie Athena Wall Hung 2 Drawer Vanity With Grey Worktop 800mm - Anthracite Woodgrain
83519 nuie Athena Wall Hung 2 Drawer Vanity With Worktop 800mm - Anthracite Woodgrain
83524 nuie Athena Wall Hung 2 Drawer Vanity With Grey Worktop 800mm - Hacienda Black
83527 nuie Athena Wall Hung 2 Drawer Vanity With Worktop 800mm - Hacienda Black
83532 nuie Athena Wall Hung 2 Drawer Vanity With Grey Worktop 800mm - Gloss White
83533 nuie Athena Wall Hung 2 Drawer Vanity With Sparkling Black Worktop 800mm - Gloss White
83534 nuie Athena Wall Hung 2 Drawer Vanity With Sparkling White Worktop 800mm - Gloss White
83605 nuie Athena Wall Hung 2 Drawer Vanity With Grey Worktop 600mm - Gloss Grey
83608 nuie Athena Wall Hung 2 Drawer Vanity With Worktop 600mm - Gloss Grey
83613 nuie Athena Floor Standing 2 Drawer Vanity With Worktop 800mm - Gloss Grey
85065 Hudson Reed Fluted 600mm Wall Hung 2-Drawer Vanity and Laminate Top - Satin Anthracite
85066 Hudson Reed Fluted 600mm Wall Hung 2-Drawer Vanity and Laminate Top - Satin Anthracite
85067 Hudson Reed Fluted 600mm Wall Hung 2-Drawer Vanity and Laminate Top - Satin Anthracite
85106 Hudson Reed Fluted 600mm Wall Hung 2-Drawer Vanity and Laminate Top - Satin White
85107 Hudson Reed Fluted 600mm Wall Hung 2-Drawer Vanity and Laminate Top - Satin White
85126 Hudson Reed Fluted 800mm Wall Hung 2-Drawer Vanity and Worktop - Satin White
85151 Hudson Reed Fluted 600mm Wall Hung 2-Drawer Vanity and Laminate Top - Satin Grey
85152 Hudson Reed Fluted 600mm Wall Hung 2-Drawer Vanity and Laminate Top - Satin Grey
85153 Hudson Reed Fluted 600mm Wall Hung 2-Drawer Vanity and Laminate Top - Satin Grey
85197 Hudson Reed Fluted 600mm Wall Hung 2-Drawer Vanity and Laminate Top - Satin Blue
85198 Hudson Reed Fluted 600mm Wall Hung 2-Drawer Vanity and Laminate Top - Satin Blue
85199 Hudson Reed Fluted 600mm Wall Hung 2-Drawer Vanity and Laminate Top - Satin Blue
85243 Hudson Reed Fluted 600mm Wall Hung 2-Drawer Vanity and Laminate Top - Satin Green
85244 Hudson Reed Fluted 600mm Wall Hung 2-Drawer Vanity and Laminate Top - Satin Green
85245 Hudson Reed Fluted 600mm Wall Hung 2-Drawer Vanity and Laminate Top - Satin Green
85319 nuie Deco 800mm Wall Hung 2-Drawer Vanity & Laminate Top - Satin Anthracite
85322 nuie Deco 800mm Wall Hung 2-Drawer Vanity & Worktop - Satin Anthracite
85365 nuie Deco 800mm Wall Hung 2-Drawer Vanity & Laminate Top - Satin White
85368 nuie Deco 800mm Wall Hung 2-Drawer Vanity & Worktop - Satin White
85416 nuie Deco 800mm Wall Hung 2-Drawer Vanity & Laminate Top - Satin Grey
85419 nuie Deco 800mm Wall Hung 2-Drawer Vanity & Worktop - Satin Grey
85467 nuie Deco 800mm Wall Hung 2-Drawer Vanity & Laminate Top - Satin Blue
85470 nuie Deco 800mm Wall Hung 2-Drawer Vanity & Worktop - Satin Blue
85518 nuie Deco 800mm Wall Hung 2-Drawer Vanity & Laminate Top - Satin Green
85521 nuie Deco 800mm Wall Hung 2-Drawer Vanity & Worktop - Satin Green
86137 Hudson Reed Havana Wall Hung 2 Drawer Unit & Laminate Worktop, 600mm - Graphite Grey/Bellato Grey
86138 Hudson Reed Havana Wall Hung 2 Drawer Unit & Laminate Worktop, 600mm - Graphite Grey/Sparkle Black
86139 Hudson Reed Havana Wall Hung 2 Drawer Unit & Laminate Worktop, 600mm - Graphite Grey/Sparkle White
86149 Hudson Reed Havana Wall Hung 2 Drawer Unit & Colour Match Worktop, 800mm - Graphite Grey
86160 Hudson Reed Havana Wall Hung 2 Drawer Unit & Laminate Worktop, 600mm - Coastal Grey/Bellato Grey
86161 Hudson Reed Havana Wall Hung 2 Drawer Unit & Laminate Worktop, 600mm - Coastal Grey/Sparkle Black
86162 Hudson Reed Havana Wall Hung 2 Drawer Unit & Laminate Worktop, 600mm - Coastal Grey/Sparkle White
86172 Hudson Reed Havana Wall Hung 2 Drawer Unit & Colour Match Worktop, 800mm - Coastal Grey
86183 Hudson Reed Havana Wall Hung 2 Drawer Unit & Laminate Worktop, 600mm - Metallic Slate/Bellato Grey
86186 Hudson Reed Havana Wall Hung 2 Drawer Unit & Colour Match Worktop, 600mm - Metallic Slate
86206 Hudson Reed Havana Wall Hung 2 Drawer Unit & Laminate Worktop, 600mm - Autumn Oak/Bellato Grey
86209 Hudson Reed Havana Wall Hung 2 Drawer Unit & Colour Match Worktop, 600mm - Autumn Oak
86507 Hudson Reed Juno 600mm Wall Hung 2-Drawer Vanity & Laminate Top - Autumn Oak
86510 Hudson Reed Juno 600mm Wall Hung 2-Drawer Vanity & Worktop - Autumn Oak
86645 Hudson Reed Juno 600mm Wall Hung 2-Drawer Vanity & Laminate Top - Graphite Grey
86646 Hudson Reed Juno 600mm Wall Hung 2-Drawer Vanity & Laminate Top - Graphite Grey
86647 Hudson Reed Juno 600mm Wall Hung 2-Drawer Vanity & Laminate Top - Graphite Grey
86665 Hudson Reed Juno 800mm Wall Hung 2-Drawer Vanity & Worktop - Graphite Grey
86714 Hudson Reed Juno 600mm Wall Hung 2-Drawer Vanity & Laminate Top - Coastal Grey
86715 Hudson Reed Juno 600mm Wall Hung 2-Drawer Vanity & Laminate Top - Coastal Grey
86716 Hudson Reed Juno 600mm Wall Hung 2-Drawer Vanity & Laminate Top - Coastal Grey
86734 Hudson Reed Juno 800mm Wall Hung 2-Drawer Vanity & Worktop - Coastal Grey
86783 Hudson Reed Juno Wall Hung 2 Drawer Vanity Unit & Laminate Worktop, 600mm - Metallic Slate/Bellato Grey
86786 Hudson Reed Juno Wall Hung 2 Drawer Vanity Unit & Colour Match Worktop, 600mm - Metallic Slate
89070 Hudson Reed Quartet Wall Hung 2 Drawer Cabinet with Grey Worktop 720mm - Gloss White
89078 Hudson Reed Quartet Wall Hung 2 Drawer Cabinet with Grey Worktop 720mm - Hacienda Black
89773 Hudson Reed Urban Wall Hung 2 Drawer Vanity Unit with Sparkling Black Worktop 800mm - Satin White
89774 Hudson Reed Urban Wall Hung 2 Drawer Vanity Unit with Sparkling White Worktop 800mm - Satin White
89824 Hudson Reed Urban Wall Hung 2 Drawer Vanity Unit with Bellato Grey Worktop 800mm - Satin Grey
89876 Hudson Reed Urban Wall Hung 2 Drawer Vanity Unit with Bellato Grey Worktop 800mm - Satin Blue
89948 Hudson Reed Urban 800mm Wall Hung 2-Drawer Unit and Laminate Top - Satin Green
90892 nuie Arno Wall Hung 2 Drawer Vanity & Laminate Worktop, 600mm - Satin Anthracite/Bellato Grey
90895 nuie Arno Wall Hung 2 Drawer Vanity & Laminate Worktop, 600mm - Satin Anthracite
90971 nuie Arno Wall Hung 2 Drawer Vanity & Laminate Worktop, 600mm - Satin Grey/Bellato Grey
90974 nuie Arno Wall Hung 2 Drawer Vanity & Laminate Worktop, 600mm - Satin Grey
91514 Hudson Reed Urban Wall Hung 2 Drawer Vanity & Laminate Worktop, 800mm - Satin Anthracite/Bellato Grey
91516 Hudson Reed Urban Wall Hung 2 Drawer Vanity & Laminate Worktop, 800mm - Satin Anthracite/White Sparkle