Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '419488d79aa1fd3b0c5b886ab38de7ca74e279d1ed262a0c60ef45aef005a5b3' 
  AND token = 'gjXnA5pWSEEb8mrL5A+ckSZSX0HrzwvaIqACC2939/E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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