Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '580df960c6278dca04c4ba8e0d77f1fad07db4d0f343e7af76008ae7d222159d' 
  AND token = 'oLarhLyWCprdnCBemYRvGvPglFBvxt16AMMK5Jzh25c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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