UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 300, 
  token = 'P+PL9Jxi4NUBfdXxpENzVuoAqFOXGRkdYCZeNl3AJUk=' 
WHERE 
  key_id = '40bc97e116410557e21fac23072168f126f0f2a766b49d0cb62360a49c391c6d' 
  AND (
    token = 'P+PL9Jxi4NUBfdXxpENzVuoAqFOXGRkdYCZeNl3AJUk=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )