Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4b04ba92563799a710340b7d51bf89416025c826fb770b60f373000032b4f162' 
  AND token = 'I13ntTj5AswcnnH9jNvPhnKy9pdGIvFXGVL3LRhEQDk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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