Mysql Case with Or condition

How to write a case in mysql query which checks for null or 0 for a particular column

CREATE TABLE tblConfirmationStatus (Confirm_Status TINY INT)

INSERT INTO tblConfirmationStatus 
Confirm_Status
VALUES
(1),
(0),
(1),
({null}),
(0),
(1),
({null})

Required Output

ConfirmStatus

   Confirmed
   Not Confirmed
   Confirmed
   Not Confirmed
   Not Confirmed
   Confirmed
   Not Confirmed

0 or Null - Not Confirmed, 1-Confirmed

SELECT CASE Confirm_Status 
            WHEN NULL OR 0 THEN 'Not Confirmed' 
             ELSE  'Confirmed' END AS ConfirmStatus
  FROM tblConfirmationStatus;