Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ae2aeb2efe55db120c3c7a89014c8a03d1f2a42a66522477edc1505277014f84' 
  AND token = 'cOT8U1fe+pGCznF5lZbQ+cWBGdFzkG3niMmi23+RGCo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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