Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd71ff11b98cae8f974c0e38cd1ec826bc139e41d5051c9a643a2161452b77405' 
  AND token = 'Wfz4xMtb/cbixgcLXXk2kOYEHE9kqz8VXQjyC4ghLnA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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