Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7010f8ba9ff8bf7c4d3aa61979260fd104d7ee34a6a7b6acb6545ad47f0e9bae' 
  AND token = 'gK1o2iQRn9IgfdUKhcO6+uOjkJyYMrmLu/aRySQ9VjY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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