Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '49266f97dd8bdcaca6fc201fd7f2a27774392fa558774cc2db08f9a8babf7298' 
  AND token = '9VzR34CGtizXq8nld/tX8rpDkBzY6N80sjxzBwZzAzk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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