Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '53dd427a3b6f7586018f278cd93a21a8eb69f31c15f42c658f3739ce2b2b8ef8' 
  AND token = 'IRZNW1k1auJiGrxPFUPwa76Y8sTODbIp0etLuyWKgJE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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