UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'd8fcrGBpGjNxOW7zbf1+W9CpnU2ygz5SfgPoLL/Sh70=' 
WHERE 
  key_id = '9fb35a8845900ea63f5a0e4c6e10700b1c3f5837a8ccaf019c2df6a3c6ff1f0b' 
  AND (
    token = 'd8fcrGBpGjNxOW7zbf1+W9CpnU2ygz5SfgPoLL/Sh70=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )