I was trying to look up some locked posts to check on because of the recent feature requests, and saw that there was no islocked:1 option.
This would help complete the set of advanced search options.
In case that isn't implemented, for whatever reason, you can find out if a post has ever been locked by using the following Google Search:
Type that into Google. The
You can also try "
This got implemented a while back when we switched over to using Elasticsearch.
To search for locked posts, use