Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '179ca290de95139744fae15696b1394e91da6e5caa53b6db5aa8e25c7d016a33' 
  AND token = 'Y9pPWlSPcbL9GOVGPz+O0JEmyaLK79X6qWzcvXX0ypI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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