SELECT 
  feature_id, 
  feature_type 
FROM 
  cscart_product_features 
WHERE 
  feature_id IN (
    923, 873, 874, 18, 825, 905, 549, 906, 
    907, 915, 839, 829, 908, 838, 834, 831, 
    903, 902, 836, 909, 870, 910, 827, 912, 
    918, 920, 917, 919, 911, 904, 837, 895, 
    456, 872, 878, 844, 922, 851, 877, 875, 
    913, 901, 921, 914, 871, 548, 850, 830, 
    646, 835, 852, 848, 849, 876, 916
  )

Query time 0.00033

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": 54,
      "filtered": "40.44",
      "cost_info": {
        "read_cost": "21.26",
        "eval_cost": "11.00",
        "prefix_cost": "32.26",
        "data_read_per_join": "64K"
      },
      "used_columns": [
        "feature_id",
        "feature_type"
      ],
      "attached_condition": "(`danishecarter_latest`.`cscart_product_features`.`feature_id` in (923,873,874,18,825,905,549,906,907,915,839,829,908,838,834,831,903,902,836,909,870,910,827,912,918,920,917,919,911,904,837,895,456,872,878,844,922,851,877,875,913,901,921,914,871,548,850,830,646,835,852,848,849,876,916))"
    }
  }
}