UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'MRXjQfqlis37fcCwCHnBQMk8sLq/i3VlWPrihCzOiaA=' 
WHERE 
  key_id = '38b0be518f01cceba1deb73ce29ce2bf9bbb8d8ea09e9c75c9e4e568be75c5ac' 
  AND (
    token = 'MRXjQfqlis37fcCwCHnBQMk8sLq/i3VlWPrihCzOiaA=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )