Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '7466056d2db2d2bff5d21a888f13d9ab353fec43bc75d11b81f93b751fbd2352' 
  AND token = '3uLWClNvMdZHTOX4iCamYYgO0B//OYipdtXr7MhEisk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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