Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8f5d172e98f11dd653cf0c30ab6663895153beaec3b12795466fdcd6ecd90183' 
  AND token = 'hIYfik1RoGHsBwCsGNMeG89PSIV8WV3JaDj0cxvy5YU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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