Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0f9bf5c72c7579e990c2ab68283308ff74bf2511c4b6fdc45fa392f62456577f' 
  AND token = '9NTiDJ9RSdAVZc4/tOgDBbhyVN6kyn5wgWoprijXE0g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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