Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'de047ecf50fcdf9872df5bb94052ff85bc732d9dda2149e1be3b13233f3a089f' 
  AND token = '/d21JNt/yecuVKQlJ4H5tif8RfswNhGxTZ/vX789ldg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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