Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a982685cb60f2292a41dd178734c7e6aca62b8bb4c8f1e99c1223b9b23823a93' 
  AND token = 'XbkVuyuWPOwcv3EOqkEuSyGQtp1q52yOYB9IZu8iDDk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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