Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2a55d82d2a81289fb2453ccd9c3586ad673bbcdb82135cb8b74c98fe62db1bec' 
  AND token = 'C/eL/ltlcmRmd3DGd34LHwVp6ejw17+p0P+g87WF1gk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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