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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2ee59e2378886ce42356c01dc70f068b324ad0a08055feb5d985edf36b4d800e' 
  AND token = 'awwCUAmo2oIB6YdUz/uimucdnes8rGIVfi2Q2i3hxxQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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