UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'U6vnGBcqMDCtj6IEYrODvx30Q1oYJlBrplgTfFQN2ys=' 
WHERE 
  key_id = '56f48ec78be8bda1f6f8ef18c4a8046ef0d673d8b9ffd4b72216dcc0756678e3' 
  AND (
    token = 'U6vnGBcqMDCtj6IEYrODvx30Q1oYJlBrplgTfFQN2ys=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )