UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '+eRpf32TRsxDhvIPhLO40aNwnie8/4z/lVFQ+FlShs4=' 
WHERE 
  key_id = '8175a1fab28101a56d4fb0817663913fcf37ee31560dd02f237c12d8b6df5c52' 
  AND (
    token = '+eRpf32TRsxDhvIPhLO40aNwnie8/4z/lVFQ+FlShs4=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )