Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e09707bb0f606b5347142cf12b7e3912b4a030292d8a104c696fed6bbd3dd7f4' 
  AND token = 'B8cpoj2u8YFhOE4M79Fe2siz+G2jtm0kRQM5v8m3mIQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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