Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fbea3f459e629fa339c279ddae861f20f0ab2728327b84c1f360f5d8556d66e1' 
  AND token = '4I8dGlHZx+cxSN9NvQxr5/b9Evb1o3J8+pWPh725ieA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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