Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '111d3599989b48a9ab906f88374db791dfc01a4364d8782d70574b954fee43e5' 
  AND token = 'vxX5MfdMiiQNCSD5uWk8eZXGRqnOVOCN7kO4Mnlt+DU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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