Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '300752c830e0a69c11167eb6f34fc8e0a6002903a747022e9f79c5bb32ea6f08' 
  AND token = 'f+VU+hL0CYg/2JKL73p3sAggr39NrqxnZKfY+KsmmZU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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