Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2854c7a0ad16d1a58faa2541b0c34199344398edfef6a741a67d5178f0139469' 
  AND token = 'A5crVK8Lol2ahUNfzd7/edoVaZHvm91DaLfHBVqDtuo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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