DATETIMEV2 milliseconds_add(DATETIMEV2 basetime, INT delta)
mysql> select milliseconds_add('2023-09-08 16:02:08.435123', 1);
+--------------------------------------------------------------------------+
| milliseconds_add(cast('2023-09-08 16:02:08.435123' as DATETIMEV2(6)), 1) |
+--------------------------------------------------------------------------+
| 2023-09-08 16:02:08.436123 |
+--------------------------------------------------------------------------+
1 row in set (0.04 sec)
milliseconds_add