Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '08330a3c264b261f971b1ca5985eec1c79782f35a4673725a575cfe7d07dac5a' 
  AND token = 'hgxoH3E2kw/f/x61x9hGAl7mdIu2TRskddCxmWg+qFA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}