UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'MMVN/1sPbWPSAiCUfbpVXIxkZijZb3OPr/M39qJy3Xw=' 
WHERE 
  key_id = '30d931e98765c3fa2d1ac01d2777f4f9a9afa008800145b3395788f9ecae3181' 
  AND (
    token = 'MMVN/1sPbWPSAiCUfbpVXIxkZijZb3OPr/M39qJy3Xw=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )