Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3357172a55440e252a1cc6d43320ce3f662f7d0bdaf2d824ea8af88e8c3c695a' 
  AND token = 'NG0Ibilnyc7f8evF+uEL2WzKBv5M5mr/8mOl4YZRzKo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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