Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '537406fea7b84e852e63ac56228983f46c12559a89c9f42f250b5cd231e63e81' 
  AND token = 'I9Mv/WlHpqyfQTYmQuzjXox4RhT8kUY3QiYQvHy5rvc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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