nostr:npub1dtw0ve3yrtslcda2l46lmm7t5z7m7sc6xf9r7cd98e37pd92utdsd885ra If it's just about exiting early, this is how you can do it in Elisp:

(catch 'stop
  (maphash
   ;; do you stuff here
   ;; exit when you want    
    (throw 'stop retval)
   ht))