Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '3e1e8102c5f1cd9a35f83799e054eef8b643e50d5cfc931953b73b0576e05738' 
  AND token = '8R2bc1Hr9+DJT7t6378kKMoUi4B4/qAD5QP2lVUMy/Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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