UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '3t5MCYg8nQ3iipMXx3KbLIcZdGGKoyD/HcYIel/lCm4=' 
WHERE 
  key_id = '51df47ad957961f6b6680f94cc85f0c78168eac9893c0950fc4f2047c0e54087' 
  AND (
    token = '3t5MCYg8nQ3iipMXx3KbLIcZdGGKoyD/HcYIel/lCm4=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )