(defvar *hash* (make-hash-table))
(setf (gethash :foo *hash*) :bar)
(setf (gethash :baz *hash*) :quux)

(multiple-value-mapcar (rcurry #'gethash *hash*) '(:foo :bar :baz :quux))
;; => (:BAR NIL :QUUX NIL) (T NIL T NIl)