Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2069ffa19d47e01facd4bab8b6f80b1bd44b75f6f8e9d7efd48b80c7694934eb' 
  AND token = '29tmD4ROyre13nkDyhRMOOQVAV2i+m/2E1KGBl2e/+I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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