Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9dc6de1ecc3c0b8ba863d987de1ae19ecd640858c1a28a0b7d23595f1922be74' 
  AND token = '8cd+2lrlF8+986fsl2i+NSv+XaAMhH4kxBf+WNaAq6k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}