SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd1f80e2b0ff70317d8dbf323ad9c2498bb73d27271e788f167bc1f92953013e8' 
  AND token = 'Hf6ZvB/qNqSYCmU8DSBPhp3WV4u+65FtSUp8ykBI6ek=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}