Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5a411a039b34085f93c1fa542707a041bd9c940db1186661bd9376f7f9ecea6f' 
  AND token = 'q0YeOKtxsfnignZdFTVkDpxGDmCNAcYIBqq7GR5X0yI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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