Show Event does not work in mysql after insert,Or no data save there

Question

I tried to start working with events today.

I wrote this : SHOW EVENTS FROM classicmodels;

And it only return : No Rows (Why? It should shows shomething)

Here is my sample event:

CREATE EVENT test_event_02
ON SCHEDULE AT CURRENT_TIMESTAMP + INTERVAL 1 MINUTE
ON COMPLETION PRESERVE
DO
   INSERT INTO messages(message,created_at)
   VALUES('Test MySQL Event 2',NOW());

And my select :

SELECT * FROM messages;

id  message created_at
1   Test MySQL Event 1  2018-11-19 18:21:55
2   Test MySQL Event 2  2018-11-19 18:24:36