Fill table with test data. Mysql procedure

fill_table.sql

DELIMITER $

CREATE PROCEDURE fill_test_table(x1 INT, x2 INT)
BEGIN
    SET @x = x1;
    REPEAT
        INSERT INTO test_table SET id=@x, insert_time=UNIX_TIMESTAMP();
        SET @x = @x + 1;
    UNTIL @x > x2 END REPEAT;
END$

DELIMITER ;

CALL fill_test_table(1, 100);  -- insert 100 rows