Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '57bf56e5a3d9a2f59c16fe993718d0c238d702f96a99184b0a38573c9c678bcc' 
  AND token = 'icgO8an/D5lOkjhFeescYBH0xzWOg7Bkv/Zy2VgTaeI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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