Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '46fb6ced5bfc228dcf9c948b3b724ad09705964b0e04091b595d2abeff0bcec4' 
  AND token = 'K39AvGNYtwYoScYLYA2LXVUqmlolGGN2bFtxKzE95Bg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00076

JSON explain

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