UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'gRvyxfKw6nyZxhAn3LTagwA0L/FIWK0w4mlu3iBT3+Y=' 
WHERE 
  key_id = '6239068d952ab7a579eaa06e4324ae72a3865c59641f2480b0e043541580ce09' 
  AND (
    token = 'gRvyxfKw6nyZxhAn3LTagwA0L/FIWK0w4mlu3iBT3+Y=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )