Yes, though further steps will be required.
See the iptables page in the wiki. As you will see, only a few ports are accessible externally, but 3306, MySQL’s port, is not.
This is because typically MySQL only needs to communicate with the Minecraft server, and as such, does not need to be exposed to the internet/the rest of the LAN.
MySQL workbench, in order to operate on your LAN, will then need 3306 opened in IPtables. As the page suggests, such a line might look like:
iptables -A INPUT -p tcp -m tcp --dport 3306 -j ACCEPT
Test accordingly and save the changes afterward to have it persist through reboots.