Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c65ddf914d4b4bf5fd182fc659027deafbc3da09437658f0adad80d3f044667f' 
  AND token = 'Y0Guw7hMYFCbmLJvlG+mLTbyWEg7j+G5L1uiM0k3mwA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}