UPDATE 
  q_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'N4Y8YLEL+vJggTbbP3Xvo82eQiwQc3krzIqbG8JHWfg=' 
WHERE 
  key_id = '50f81b467a16fc2bd7e721ea9dd874cd469bfdb0611da4ecf8ff008c88a27153' 
  AND (
    token = 'N4Y8YLEL+vJggTbbP3Xvo82eQiwQc3krzIqbG8JHWfg=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )