Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'a6c24086b9ef8322ca64eb5e9e22815903468b5bcc21a0bb35b864d46ead2463' 
  AND token = 'kbuIAVBAmYbodIrXF0yvsedMUtANp6aFzB8SsSItkm4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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