SELECT
cod,name_rus, country_id, region_id, rayon_rus, (abs((lon - -68.29773)*(lon - -68.29773)) + ABS((lat - -54.80554)*(lat - -54.80554)) ) as distance
FROM city_guru
WHERE cod < 100000000 and
(abs((lon - -68.29773)*(lon - -68.29773)) + ABS((lat - -54.80554)*(lat - -54.80554)) )<10 and (abs((lon - -68.29773)*(lon - -68.29773)) + ABS((lat - -54.80554)*(lat - -54.80554)) ) >0.000001
ORDER BY `distance` ASC limit 1