Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '9731ab65fd1cc3747fe63b1e73782c61aaaae33832852b8e876f46c72bfe9c54' 
  AND token = 'A3BWnIXgiBB4Qz3tArBMibI0ZylEHm2IASLPhQ1yz5A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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