Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cf549c80db22fb815313ac77a19dee389b43132d7fa38dd7a662689444b53d9f' 
  AND token = 'wmfdIHrkrefdWYZTl9uAEK/j4Au/Ozik1Bw4lw7YXDM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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