Is there any way to select / show all current locks that have been taken out using the GET_LOCK function?
Note that GET_LOCK locks are different from ta
GET_LOCK
Starting with MySQL 5.7, the performance schema exposes all metadata locks, including locks related to the GET_LOCK() function.
GET_LOCK()
See http://dev.mysql.com/doc/refman/5.7/en/metadata-locks-table.html