Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd8a11f8840633db60973a8c838fb77cbccb17eae691d64c7f967477377c12878' 
  AND token = 'muqZHWdn0wQlL8LSYZ9+m0AUG3vLqmBuYfnjI0bmCkQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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