UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'MUBSf81vUrSEfVf09irVlXvt5S1GeDcVksMbxSny8CI=' 
WHERE 
  key_id = '255190dceb7cc46e46f70149e833c2e23647c0cc31bcfc32cf7719ba76756c6f' 
  AND (
    token = 'MUBSf81vUrSEfVf09irVlXvt5S1GeDcVksMbxSny8CI=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )