SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c85530a43c1f61299f1ccfed247f5fbbacf97e839998f3745811363cfc484bcc' 
  AND token = 'f1COLpFRzW3llhRWHHwfiDbHv+wPIsC+hoYKx5x/pGE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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