Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7f4488453916b5b98f81992712c55c9f690530cc000e696beefca7e0cf1e1a41' 
  AND token = 'm31yA7HSWRH7ENZo/EFzvax9j4f7WoXooTKfdZlb8yk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00058

JSON explain

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