Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e2ed31646bd35bde9c305dabc2b79ce04537a6b6643ae639907281c1debafd29' 
  AND token = 'K5QvqNL8bYPb5catyxwDf7F6qVsydy34rPa5Q61dLfY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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