Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd565548879baf7a31bbc19cbf0a4bd5fcb77a6d825859e9e1e987e988ba305e7' 
  AND token = 'zTOPvbE3umWOrGKJSNYYU5dPIaLkRydJ85mb8QjPLz4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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