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 (
    88766, 88672, 88719, 88563, 88758, 88663, 
    88710, 88757, 88662, 88709, 88717, 
    88755, 88756, 88754, 88554, 88660, 
    88661, 88707, 88708, 88753, 88796, 
    88659, 88706, 88763, 88658, 88700, 
    88705, 88747, 88752, 88794, 88795, 
    88553, 88669, 88716, 88551, 88657, 
    88698, 88699, 88704, 88745, 88746, 
    88559, 88552, 88793, 88550, 88593, 
    88697, 88744
  ) 
  AND cscart_product_descriptions.lang_code = 'en'

Query time 0.00110

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "21.63"
    },
    "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": "16.83",
        "eval_cost": "4.80",
        "prefix_cost": "21.63",
        "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 (88766,88672,88719,88563,88758,88663,88710,88757,88662,88709,88717,88755,88756,88754,88554,88660,88661,88707,88708,88753,88796,88659,88706,88763,88658,88700,88705,88747,88752,88794,88795,88553,88669,88716,88551,88657,88698,88699,88704,88745,88746,88559,88552,88793,88550,88593,88697,88744)) and (`nuie_scalesta_net`.`cscart_product_descriptions`.`lang_code` = 'en'))"
    }
  }
}

Result

product_id short_description full_description
88550 Hudson Reed Fusion Fitted Floor Standing 2 Door Vanity Unit Compact 500mm - Gloss White
88551 Hudson Reed Fusion Fitted Floor Standing 2 Door Vanity Unit 500mm - Gloss White
88552 Hudson Reed Fusion Fitted Floor Standing 2 Door Vanity Unit Compact 600mm - Gloss White
88553 Hudson Reed Fusion Fitted Floor Standing 2 Door Vanity Unit 600mm - Gloss White
88554 Hudson Reed Fusion Fitted Floor Standing 2 Door Vanity Unit 800mm - Gloss White
88559 Hudson Reed Fusion Fitted Floor Standing 1 Door 1 Drawer Lined Unit 300mm - Gloss White
88563 Hudson Reed Fusion Fitted Floor Standing 4 Drawer Lined Unit 300mm - Gloss White
88593 Hudson Reed Fusion Fitted Floor Standing 1 Door Base Unit 400mm - Gloss White
88657 Hudson Reed Fusion Fitted Floor Standing 1 Door Vanity Unit Compact 400mm - Anthracite Woodgrain
88658 Hudson Reed Fusion Fitted Floor Standing 1 Door Vanity Unit 400mm - Anthracite Woodgrain
88659 Hudson Reed Fusion Fitted Floor Standing 2 Door Vanity Unit Compact 500mm - Anthracite Woodgrain
88660 Hudson Reed Fusion Fitted Floor Standing 2 Door Vanity Unit 500mm - Anthracite Woodgrain
88661 Hudson Reed Fusion Fitted Floor Standing 2 Door Vanity Unit Compact 600mm - Anthracite Woodgrain
88662 Hudson Reed Fusion Fitted Floor Standing 2 Door Vanity Unit 600mm - Anthracite Woodgrain
88663 Hudson Reed Fusion Fitted Floor Standing 2 Door Vanity Unit 800mm - Anthracite Woodgrain
88669 Hudson Reed Fusion Fitted Floor Standing 1 Door 1 Drawer Lined Unit 300mm - Anthracite Woodgrain
88672 Hudson Reed Fusion Fitted Floor Standing 4 Drawer Lined Unit 300mm - Anthracite Woodgrain
88697 Hudson Reed Fusion Fitted Floor Standing 1 Door Base Unit Compact 300mm - Anthracite Woodgrain
88698 Hudson Reed Fusion Fitted Floor Standing 1 Door Base Unit 300mm - Anthracite Woodgrain
88699 Hudson Reed Fusion Fitted Floor Standing 1 Door Base Unit Compact 400mm - Anthracite Woodgrain
88700 Hudson Reed Fusion Fitted Floor Standing 1 Door Base Unit 400mm - Anthracite Woodgrain
88704 Hudson Reed Fusion Fitted Floor Standing 1 Door Vanity Unit Compact 400mm - Hacienda Black
88705 Hudson Reed Fusion Fitted Floor Standing 1 Door Vanity Unit 400mm - Hacienda Black
88706 Hudson Reed Fusion Fitted Floor Standing 2 Door Vanity Unit Compact 500mm - Hacienda Black
88707 Hudson Reed Fusion Fitted Floor Standing 2 Door Vanity Unit 500mm - Hacienda Black
88708 Hudson Reed Fusion Fitted Floor Standing 2 Door Vanity Unit Compact 600mm - Hacienda Black
88709 Hudson Reed Fusion Fitted Floor Standing 2 Door Vanity Unit 600mm - Hacienda Black
88710 Hudson Reed Fusion Fitted Floor Standing 2 Door Vanity Unit 800mm - Hacienda Black
88716 Hudson Reed Fusion Fitted Floor Standing 1 Door 1 Drawer Lined Unit 300mm - Hacienda Black
88717 Hudson Reed Fusion Fitted Floor Standing 2 Door 1 Drawer Lined Unit 500mm - Hacienda Black
88719 Hudson Reed Fusion Fitted Floor Standing 4 Drawer Lined Unit 300mm - Hacienda Black
88744 Hudson Reed Fusion Fitted Floor Standing 1 Door Base Unit Compact 300mm - Hacienda Black
88745 Hudson Reed Fusion Fitted Floor Standing 1 Door Base Unit 300mm - Hacienda Black
88746 Hudson Reed Fusion Fitted Floor Standing 1 Door Base Unit Compact 400mm - Hacienda Black
88747 Hudson Reed Fusion Fitted Floor Standing 1 Door Base Unit 400mm - Hacienda Black
88752 Hudson Reed Fusion Fitted Floor Standing 1 Door Vanity Unit Compact 400mm - Gloss Grey
88753 Hudson Reed Fusion Fitted Floor Standing 1 Door Vanity Unit 400mm - Gloss Grey
88754 Hudson Reed Fusion Fitted Floor Standing 2 Door Vanity Unit Compact 500mm - Gloss Grey
88755 Hudson Reed Fusion Fitted Floor Standing 2 Door Vanity Unit 500mm - Gloss Grey
88756 Hudson Reed Fusion Fitted Floor Standing 2 Door Vanity Unit Compact 600mm - Gloss Grey
88757 Hudson Reed Fusion Fitted Floor Standing 2 Door Vanity Unit 600mm - Gloss Grey
88758 Hudson Reed Fusion Fitted Floor Standing 2 Door Vanity Unit 800mm - Gloss Grey
88763 Hudson Reed Fusion Fitted Floor Standing 1 Door 1 Drawer Lined Unit 300mm - Gloss Grey
88766 Hudson Reed Fusion Fitted Floor Standing 4 Drawer Lined Unit 300mm - Gloss Grey
88793 Hudson Reed Fusion Fitted Floor Standing 1 Door Base Unit Compact 300mm - Gloss Grey
88794 Hudson Reed Fusion Fitted Floor Standing 1 Door Base Unit 300mm - Gloss Grey
88795 Hudson Reed Fusion Fitted Floor Standing 1 Door Base Unit Compact 400mm - Gloss Grey
88796 Hudson Reed Fusion Fitted Floor Standing 1 Door Base Unit 400mm - Gloss Grey