UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'EepfuMC3e9sZH393V2W95v86tEMYd8XO03jICvVuZE0=' 
WHERE 
  key_id = '78d1f9826d746e937aca2d5ed81f0afd54da07765997a07293b03799d4a8a693' 
  AND (
    token = 'EepfuMC3e9sZH393V2W95v86tEMYd8XO03jICvVuZE0=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )