Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd085110c1172c72ac91a9aa39be280c24ba60b7a634e514a5b59b09633694fbf' 
  AND token = 'jD7jYbSJBmd2gTO3EbQSM2Ju8qbF6Jfq96j8zjFqKlY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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