Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a9377e9683ec04724552f7a94f1852fda9007401bbc9e2370b0f2a50f96fb871' 
  AND token = 'fwiDymVwW8wfIK7Pbx5rte7aT5N/IUDb6f0evL1Z8+Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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