Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'abc82d0f727e44ec2273c8a5a43fae90c3361dc8f1071ca561f61c690635ff20' 
  AND token = 'JNLXx3iEG28MQu6luWtABwE2lljI8cTcoxPeHk2OrUw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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