Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b149c012f9c4a69b0106a6a9b6ab01f46e7e99ccccc0d12ec911976564b81c9a' 
  AND token = 'FkSVYKhq0YivK3yiQa+54b02kYcz4IcNMTw4slRibQI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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