Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5d0ee065cebed0d7dee20101baea7bea041a3fd28c9ba272017e68d61d77d28c' 
  AND token = 'wIoKXNLfUQ3mVpf86u109o5ROjoYmNb00P1vun4KhiU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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