Execute query using daily timestamp (mysql event)
Have a look at date_format function. You can use it this way:

mysql&gt; select date_format(now(), "%Y-%m-%d 00:00:00");
+-----------------------------------------+
| date_format(now(), "%Y-%m-%d 00:00:00") |
+-----------------------------------------+
| 2016-04-25 00:00:00                     |
+-----------------------------------------+


Or, if you want minute 1, as per your example:

mysql&gt; select date_format(now(), "%Y-%m-%d 00:01:00");
+-----------------------------------------+
| date_format(now(), "%Y-%m-%d 00:01:00") |
+-----------------------------------------+
| 2016-04-25 00:01:00                     |
+-----------------------------------------+