How to insert current timestamp in MySQL

How to insert current timestamp in MySQL
steps
1. create database test3; //* in my case name is test3)//
2. create table demo ( pr int primary key auto_increment, time_stamp timestamp default current_timestamp, var1 int, var2 int, var3 int);
3. insert into demo ( var1, var2, var3) values (10, 11,333), (22,30,3);
4. select * from demo;

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