Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2dec5324d5ca241b6d5fd04a88796069308ec41145e100a8e2b5a792065d536e' 
  AND token = 'BWU6DiXzYMbWRSigRIq/rzGcXXvOoR3Tginpei/KlTw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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