Create mysql user which is also a domain account
By default, MySQL server accounts, with the default authentication plugin, are completely unrelated to system or network users. That means that (again, stress on by default), whenever you run: CREATE USER you are creating a mysql-only account, no matter if it has the same name than other system (os) or authentication methods.

However, MySQL has available authentication plugins, which you can enable on a per-account basis, and link it, for example, to OS accounts or LDAP/domain network accounts.

I am personally not familiar with Microsoft Authentication methods (I am myself a Linux administrator, so I only familiar with plugins such as unix_socket and PAM) but a quick search tells me that such plugins indeed exist:

https://dev.mysql.com/doc/refman/5.5/en/windows-pluggable-authentication.html

I can even see MySQL installed on Linux servers using PAM to authenticate using windows servers: 

https://runops.wordpress.com/2015/03/19/how-to-setup-active-directory-authentication-in-mysql-running-on-linux/

If you were unsuccessful with trying those, or don't want to pay for them, you could setup an external utility to sync domain users with MySQL local users.