Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '533d8f4ea2ab8925747a7eba673f7818495280b612e17170552b9cb6b0418999' 
  AND token = 'aGg+MsFTfcZMBzD/76RLFk85MP78ERItprhzB0oy4Hc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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