SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    881, 894, 882, 895, 893, 950, 957, 949, 
    956, 953, 954, 951, 952, 958, 1090, 955, 
    335, 334, 156, 336, 961, 965, 963, 964, 
    962, 966, 219, 270, 1302, 272, 273, 274, 
    973, 223, 222, 160, 194, 164, 174, 158, 
    183, 192, 188, 163, 172, 184, 173, 191
  )

Query time 0.00177

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "table_name": "cscart_products",
      "access_type": "range",
      "possible_keys": ["PRIMARY"],
      "key": "PRIMARY",
      "key_length": "3",
      "used_key_parts": ["product_id"],
      "rows": 48,
      "filtered": 100,
      "index_condition": "cscart_products.product_id in (881,894,882,895,893,950,957,949,956,953,954,951,952,958,1090,955,335,334,156,336,961,965,963,964,962,966,219,270,1302,272,273,274,973,223,222,160,194,164,174,158,183,192,188,163,172,184,173,191)"
    }
  }
}