Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'faaeabe01d48d6bbaebecf37feb4d876fa4f53ccc01a0ec70872eae7758dc70e' 
  AND token = 'Y4NzNuH9ZzV3VItpQBNZMeq7ba587E+KJaQ6dSS+qpw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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