Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '347d8ac21f2252e2da6e78655e55911836c38b8918f1112da7a7edef34f665e6' 
  AND token = 'kGRb8i2bJVuI45cuv94Qb7C3bxjOnlbOqeEKfYDPE5g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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