Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '77654a5da2d991cb46d6b2ebd7cacce4c9844c8397b7373e6dec32462967f1fd' 
  AND token = 'maJZP74t1GufvIkPOiASh++biGUTKRAZWIM73FKnhx8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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