UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'MhB2YgVB9zIMnLvjNlh7JOPHc3xReT5E/mxnBSskfzA=' 
WHERE 
  key_id = '4b584c063c4758087e59aa3c354a1b37854697ebb4964e111fd5927dc666a690' 
  AND (
    token = 'MhB2YgVB9zIMnLvjNlh7JOPHc3xReT5E/mxnBSskfzA=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )

Query time 0.00044