UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'pwQAxYW3saDgFgIQWN9rqiili2QmrVfj54KS4Ag9zhc=' 
WHERE 
  key_id = '8e91c15c3960393515898699e6c4984acd004f32320d293810a9d9c828a805ec' 
  AND (
    token = 'pwQAxYW3saDgFgIQWN9rqiili2QmrVfj54KS4Ag9zhc=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )