Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '24348e41b2066eea2bb6176220f4668c4875c756190df46d66f738cf382d9fda' 
  AND token = 'xhxy6wSkjxGcEoGdnihlUA4pNbFEPvULi1ne1QosDrM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}