Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3190bc2765ce9914a97c391a3d50df76f628e365e9869556c6596c6aab55be63' 
  AND token = 'G2b2q1CM4IREa61tu7KUObK9tBkqVEJBHJHhJyeCo8Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}