Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3e724cdc3faff228e904bc3e595a20abc4ecb09ef2a70cae7249e94c405023ea' 
  AND token = 'XPWU5ZPSSwSN2uhVjw1d7RBmhJrvhe5ShjpEcd6hSWU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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