Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '72456adf316186353409d42e3fb83077a1298a25adb2b7ef4655b853c5d8ec22' 
  AND token = '+/AorJFsqTt7ANAzG8PbS7Eiu91NDeVbmicjVyD5yts=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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