Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0fc9e109603308d80b7fcc6658145ac97cf943457ef131250bc9ccff3d77e5aa' 
  AND token = 'rmuvOUzupkx5D9mnJzW0N2HMoKlMOByMA6/axDUJfS8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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