Create a Smart Folder based on an EXIF keyword?
Note this works for .jpg images (not .png).


Open a Finder window
New Smart Folder
Click the Plus icon
Change Name to Other
Search Raw
Click Raw query and OK
Next to Raw Query type "kMDItemKeywords = Mango"
Click Save
Name the saved search and save it in the default location (~/Library/Saved Searches)
Click the Mango Smart Folder in the Sidebar and see your result


Thanks @patrix