UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'xEB8wHIScDbfwOop6P4ETojCFB80zH9fBygb0k+JysM=' 
WHERE 
  key_id = 'b877ee51855518fcadc352d5e1f751da65db691db97ca7aa95bc4cd34eb27b40' 
  AND (
    token = 'xEB8wHIScDbfwOop6P4ETojCFB80zH9fBygb0k+JysM=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )