Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '746aa8a7525ffb8b23ce7876a64e60fccfddf7dd721a6ab1b93a969a0fb36b2e' 
  AND token = '92G7swxJH3K4cWAOHepCxY8fYuWVDsc2bHWaJwh1IXw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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