UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'mqZWje4GOIEpkRylembrydBOTjAxuTwGhqQcQxqLGpY=' 
WHERE 
  key_id = '0a935468cee08d3dcff9f53fbb980a8a76a4e3b954885fb36392d4566f40a941' 
  AND (
    token = 'mqZWje4GOIEpkRylembrydBOTjAxuTwGhqQcQxqLGpY=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )