Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '372c46de60494f697fb1e15d0ced40c50c42cd680810fada72fd0bc611e6efb6' 
  AND token = '8JZw7riyoGu8UlwjlAkX1381R02uffKP4Y+KO6bEFDI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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