Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '993d88461166ef95fc3a5a12b4a435c880b6988d48b99bf0d77b2b091bda7bba' 
  AND token = 'J3xfDz0YgnC87RKd24/oIqJZYi31RlwvzzrARD0Fx0o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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