Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e41735efc6cc51398a3eed6e59cbe2106bf17beeb6e659400e6c1e39816eb3a1' 
  AND token = 'bsS75N+srrq4Ra4My/9QMOMIPQuAH2f8kC0jTzZFGtM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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