UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '6s3kpTE1/rDo8wirZmu0kGYGapvQbNDgYap21L0mzGk=' 
WHERE 
  key_id = 'f4fe950366755d6644347d4dc9d61675e6efa18588797118c24754126d544e9d' 
  AND (
    token = '6s3kpTE1/rDo8wirZmu0kGYGapvQbNDgYap21L0mzGk=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )