Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e89b31e64df9994d3f63365c84a4c2aa0a317a3e2406166b7908cdbefa97861e' 
  AND token = 'TwOvhG3K+GHl9mpamI24bdGcxGfY/PZDC6rxkaR3Hs4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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