Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '10be0c8cc634c606a509320fd1e3c1d75ef885d531c5a68e02d970292da43a02' 
  AND token = 'kILHNulve8rZo7MWrTmC8Yirb4nY1YuJnFRePfcKbzU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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