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, 
  cscart_product_descriptions.meta_keywords, 
  cscart_product_descriptions.meta_description, 
  cscart_product_descriptions.search_words, 
  cscart_product_descriptions.promo_text, 
  cscart_product_descriptions.unit_name 
FROM 
  cscart_product_descriptions 
WHERE 
  cscart_product_descriptions.product_id IN (
    1431, 360, 1479, 1478, 414, 1866, 1427, 
    788, 1084, 1407, 1903, 1452, 1453, 538, 
    1864, 1863, 1461, 1199, 1943, 1901, 
    1200, 1212, 1939, 1211, 759, 1415, 1255, 
    1796, 23, 24, 1468, 1466, 1467, 1482, 
    1484, 1568, 1535, 1566, 1567, 1444, 
    1418, 1443, 1054, 1369, 1370, 60, 808, 
    1274, 1030, 1437, 1780, 1031, 807, 1487, 
    806, 1032, 1033, 1470, 370, 1573, 1752, 
    1424, 1423, 1744, 934, 1010, 1434, 1818, 
    153, 1290, 1291, 1292, 1917, 1916, 505, 
    395, 1795, 215, 214, 217, 212, 216, 234, 
    213, 1491, 1496, 1497, 1498, 1480, 1570, 
    1571, 1572, 1626, 1784, 1286, 1287
  ) 
  AND cscart_product_descriptions.lang_code = 'en'

Query time 0.00247

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "table_name": "cscart_product_descriptions",
      "access_type": "range",
      "possible_keys": ["PRIMARY", "product_id"],
      "key": "PRIMARY",
      "key_length": "9",
      "used_key_parts": ["product_id", "lang_code"],
      "rows": 96,
      "filtered": 100,
      "index_condition": "cscart_product_descriptions.product_id in (1431,360,1479,1478,414,1866,1427,788,1084,1407,1903,1452,1453,538,1864,1863,1461,1199,1943,1901,1200,1212,1939,1211,759,1415,1255,1796,23,24,1468,1466,1467,1482,1484,1568,1535,1566,1567,1444,1418,1443,1054,1369,1370,60,808,1274,1030,1437,1780,1031,807,1487,806,1032,1033,1470,370,1573,1752,1424,1423,1744,934,1010,1434,1818,153,1290,1291,1292,1917,1916,505,395,1795,215,214,217,212,216,234,213,1491,1496,1497,1498,1480,1570,1571,1572,1626,1784,1286,1287) and cscart_product_descriptions.lang_code = 'en'"
    }
  }
}

Result

product_id short_description full_description meta_keywords meta_description search_words promo_text unit_name
23
24
60
153
212
213
214
215
216
217
234
360
370
395
414
505
538
759
788
806
807
808
934
1010
1030
1031
1032
1033
1054
1084
1199
1200
1211
1212
1255
1274
1286
1287
1290
1291
1292
1369
1370
1407
1415
1418
1423
1424
1427
1431
1434
1437
1443
1444
1452
1453
1461
1466
1467
1468
1470
1478
1479
1480
1482
1484
1487
1491
1496
1497
1498
1535
1566
1567
1568
1570
1571
1572
1573
1626
1744
1752
1780
1784
1795
1796
1818
1863
1864
1866
1901
1903
1916
1917
1939
1943