Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd39aab830b07717c80c52c0a842067653fe53b51e904e78bd2112883b9273155' 
  AND token = 'Vm1rcSZOG4rZ8AhhlHVhrhnd3ExbzOFaXZHJ9RPIskA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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