Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '5f5cf63821448fc2d4e5487b2129159967b7713b45bfd5d9971f6f6e07b045c2' 
  AND token = 'NDV9lUPZCrYxdM/eYydehIoNeo0bqr10bQh56nLD+sA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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