Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd994f9e7404b7c57a77bfcd01e9d11e0f099ba08eff985ed6360ecc73b0f560f' 
  AND token = 'eZ6sLH3GffTLUET0rGXvCxY+uJzfJACvyPcOcTip7g4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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