Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e5b6d829954a425a066d09d6c83e02d8a2baa8982f571ffa222cb179f7043b89' 
  AND token = 'XCaPHPPo2GP0Nds99vXMNWQK6YVMRFPnRx5DhSA8dBg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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