Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '26a16bd4aca544ddb11df72a245079111712c47436e86574dd1481aa959d0a80' 
  AND token = 'bn5SVf+URely0nIyFvnY4xsNFvNr0+HqoAG5Ge7haBw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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