Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c5d46cfd2af2fa8c2c291092dad7119af78e352213ed7dd34602f245dbc64780' 
  AND token = 'JdYGhohFBrhKwnwMzbHhb7xdah1UqaPjmBPPiBfcQ9g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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