Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'af9ec7f0ecd094fab8b42321cfce2994c910f7ebf5613cfdd351bb3cad58ad1f' 
  AND token = 'YJYXJx7BpRThVZW+7kZE9RMamtrJivWrkK+BaNevdqc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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