Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd8313e8e433fb53de27098a4393a7ece6c09a066b5751a75f478144b97c5405f' 
  AND token = 'Uu/BZyezt7fOjieYN/oWouoI1wwwJFk0y+jLbi9y7k8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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