Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4eadd0b4aa3c4430fb611a47a87c4004a6392dfcbe264fd3d4880df5f42b3385' 
  AND token = 'B2UNc+WnQd5VHkgDlLD2xmaW75MipeY00MuIQ0B38b4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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