Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0568a77113d80b534e196d2e18b49d917c9b21b32eb9f2b9af406ebfe9856d5a' 
  AND token = '2ebTiebF8nLf5bpqqmRHEpoljIW4rFz6K+P024xBcQk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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