SELECT 
  feature_id, 
  feature_type 
FROM 
  cscart_product_features 
WHERE 
  feature_id IN (
    923, 18, 825, 905, 549, 906, 907, 915, 
    839, 829, 908, 840, 838, 879, 834, 831, 
    903, 902, 836, 909, 885, 884, 910, 827, 
    912, 918, 920, 917, 919, 911, 904, 837, 
    456, 833, 922, 851, 877, 875, 913, 901, 
    921, 914, 548, 842, 850, 830, 646, 886, 
    848, 849, 916, 853, 900, 883
  )

Query time 0.00037

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "32.26"
    },
    "table": {
      "table_name": "cscart_product_features",
      "access_type": "ALL",
      "possible_keys": [
        "PRIMARY"
      ],
      "rows_examined_per_scan": 136,
      "rows_produced_per_join": 53,
      "filtered": "39.71",
      "cost_info": {
        "read_cost": "21.46",
        "eval_cost": "10.80",
        "prefix_cost": "32.26",
        "data_read_per_join": "63K"
      },
      "used_columns": [
        "feature_id",
        "feature_type"
      ],
      "attached_condition": "(`danishecarter_latest`.`cscart_product_features`.`feature_id` in (923,18,825,905,549,906,907,915,839,829,908,840,838,879,834,831,903,902,836,909,885,884,910,827,912,918,920,917,919,911,904,837,456,833,922,851,877,875,913,901,921,914,548,842,850,830,646,886,848,849,916,853,900,883))"
    }
  }
}