UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '4Rb/SOgXuDeoR6rEOCU/I1BEtrcKd7NxlF1mAnJq+iQ=' 
WHERE 
  key_id = '6984bf1d367d542bc31bceb188998a0df643cb60a060caff6653695b3b3d0038' 
  AND (
    token = '4Rb/SOgXuDeoR6rEOCU/I1BEtrcKd7NxlF1mAnJq+iQ=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )