UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '68c90WlKqPOEKUBhX3sa5Em8JbamPhwgCEy4RnDv0wY=' 
WHERE 
  key_id = '52d99e6c422407ddfbbe1847b6674c9480b31a895570d4ef1b476f5edea54d58' 
  AND (
    token = '68c90WlKqPOEKUBhX3sa5Em8JbamPhwgCEy4RnDv0wY=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )