UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'yMDSRrUjhp2JCh+3gb+x1qLGd8FTV7mVksMtNO07De0=' 
WHERE 
  key_id = '84104e4134582bd065bc812457fd18b345f4756c8295230cc5f623dfac2be53d' 
  AND (
    token = 'yMDSRrUjhp2JCh+3gb+x1qLGd8FTV7mVksMtNO07De0=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )