Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '425b3f67aeaf1b842a1bb3f22341c43dca5e71405e07a9eb35a723e37aed7838' 
  AND token = 'N6hV27kcFIb4/t9IF4NM5+50SGRRFiXinRKBZUfXh+M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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