Quick question: Toric divisor on the quadric cone

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Let $Q_t=(xy-z^2-tw^2)\subset\mathbb{P}^3_{x:y:z:w}$ be a family of quadric surfaces with the central fiber $Q_0$ being singular.

Let $C=(xy-z^2,w)\subset Q_t$ be the conic at infinity. For $t\neq 0$ we have $C$ is non-toric in $Q_t$.

But $C$ is toric in $Q_0$?