Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '6018655e2030c4c148c00820968dc478660959d16ade32777e0e41a5bcac7fd6' 
  AND token = '/JhNj3g+53OgHyeLyHzg7gJ0YnUn+shEvA0nHhtx4nQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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