Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '4be468b7d53595839090f78196c4f539d145598f450d087aa38b9546dd8580bb' 
  AND token = 'ImGhtNb5KpC70a/DhEyKY2z09M6jdwvrXo8grR9PaL4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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