Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a4765329864171fe802362ecc18997d06d6afbb5a0b4bd7aab8845b83759816d' 
  AND token = 'uCssk9E6tUevCHZa/X8ssy9hwwkzloZ0Eor1N32ANwg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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