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 (
    92766, 92767, 92768, 92775, 92776, 92777, 
    92778, 92779, 92780, 92781, 92782, 
    92783, 92784, 92785, 92786, 92787, 
    92788, 92789, 92790, 92791, 92798, 
    92799, 92800, 92801, 92802, 92803, 
    92804, 92805, 92806, 92807, 92808, 
    92809, 92810, 92811, 92812, 92813, 
    92814, 92821, 92822, 92823, 92824, 
    92825, 92826, 92827, 92828, 92829, 
    92830, 92831, 92832, 92833, 92834, 
    92835, 92836, 92837, 92844, 92845, 
    92846, 92847, 92848, 92849, 92850, 
    92851, 92852, 92853, 92854, 92855, 
    92856, 92857, 92858, 92859, 92860, 
    92861, 92862, 92863, 92864, 92865, 
    92866, 92867, 92868, 92869, 92870, 
    92871, 92872, 92873, 92874, 92875, 
    92876, 92877, 92878, 92879, 92880, 
    92881, 92882, 92883, 92884, 92885
  ) 
  AND cscart_product_descriptions.lang_code = 'en'

Query time 0.00169

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 (92766,92767,92768,92775,92776,92777,92778,92779,92780,92781,92782,92783,92784,92785,92786,92787,92788,92789,92790,92791,92798,92799,92800,92801,92802,92803,92804,92805,92806,92807,92808,92809,92810,92811,92812,92813,92814,92821,92822,92823,92824,92825,92826,92827,92828,92829,92830,92831,92832,92833,92834,92835,92836,92837,92844,92845,92846,92847,92848,92849,92850,92851,92852,92853,92854,92855,92856,92857,92858,92859,92860,92861,92862,92863,92864,92865,92866,92867,92868,92869,92870,92871,92872,92873,92874,92875,92876,92877,92878,92879,92880,92881,92882,92883,92884,92885)) and (`nuie_scalesta_net`.`cscart_product_descriptions`.`lang_code` = 'en'))"
    }
  }
}

Result

product_id short_description full_description
92766
92767
92768
92775
92776
92777
92778
92779
92780
92781
92782
92783
92784
92785
92786
92787
92788
92789
92790
92791
92798
92799
92800
92801
92802
92803
92804
92805
92806
92807
92808
92809
92810
92811
92812
92813
92814
92821
92822
92823
92824
92825
92826
92827
92828
92829
92830
92831
92832
92833
92834
92835
92836
92837
92844
92845
92846
92847
92848
92849
92850
92851
92852
92853
92854
92855
92856
92857
92858
92859
92860
92861
92862
92863
92864
92865
92866
92867
92868
92869
92870
92871
92872
92873
92874
92875
92876
92877
92878
92879
92880
92881
92882
92883
92884
92885