UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'C+fx8IXJs28GblNE2u1uM2S5KeNjwKupQVDz/umqe/A=' 
WHERE 
  key_id = '953309646b2f9295b7120e56cc4463b11da31bc2da2a19061f57f01951a988d3' 
  AND (
    token = 'C+fx8IXJs28GblNE2u1uM2S5KeNjwKupQVDz/umqe/A=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )