Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5c1f0cbeca5d8ad8e0db03c56dd9720e65445a304a4ccfafdc35fce85585abab' 
  AND token = 'yJPYMDhR2xgx5Z6egv1cIU0Byp/LNouaRjWHy/OZMOg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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