jdbc:mysql://localhost/db?useTimezone=true&useLegacyDatetimeCode=false&serverTimezone=UTC&useSSL=false

mysql> SELECT TIMESTAMPDIFF(MINUTE, u.date_created, now()) from user u;
+----------------------------------------------+
| TIMESTAMPDIFF(MINUTE, u.date_created, now()) |
+----------------------------------------------+
|                                           60 |
+----------------------------------------------+