Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '11e590b8eae075fea0f3a1a9d2a9f2ddb1f52dc376686572edc9bb1d6208f76c' 
  AND token = 'tYvhjpa9E8PdfFSWrtvdzeVpKsretuDlEly9SCSJNis=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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