With this plugin you can search posts and for their slug, see the slug in admin post overview in an additional column and sort by it
Copy the TS Search Slug Plugin Folder to your WordPress Plugin Folder and activate it.
Contributors & Developers
“TS Search Slug” is open source software. The following people have contributed to this plugin.Contributors
Fix PHP Warning « Parameter 2 to posts_where() expected to be a reference, value given »
Fix bug, that other search parameters in admin area are ignored when slug search is activated
Add custom post type support