Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3c4b9d25a8c0483604d5cc89f64376442cbdb2155293cddf393881bf21fb3aa0' 
  AND token = 'Ypq4Onk4h1R/xSm5hvEujapAnZ0lsNNvsHYM2+RUUFA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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