Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'bfce30b868919edce27622ef23581cd89126169e9b493c0f4bb58c3455a04c7f' 
  AND token = 'aSOWo2wGTw5N3AMtAbgP6mvoePeFNnQAObdedU7ARwg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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