Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '00e4a61ffec6c50db6e5b9414efe209d11c990dd8bbdccd9ad03f6d994399354' 
  AND token = 'aCVbt+veSOMmm0bNpdpZ5Nvqfm6rFyp7ekZSom4KcwQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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