Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '65d32e5f5d47543a54b26750c76982e729cd4915f2a5478b860f8106a6d2486b' 
  AND token = '9R2S15CPy/HJQRcPFFBFHuOtJPGrB912lTJ3jCsPKvE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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