Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ac1325ac9afdd83fc0eca791ea7b91cfd19e1fadb36e36b450c5ed0da3f34b2e' 
  AND token = 'vg88+Gx8LANunnoll7rmm6zJb8o1rldGExivIXTWzZA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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