Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f1cc9d6ce8176763841322b9ccd47665700987ebb1e203b20d665e40ede09a4f' 
  AND token = 'W2eevs6Q4RZ98CrToIliimX79qgbtuJ7Evot2hv6tSA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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