Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '04722780bc4ad4e085e3e3b3b82ec83c8e3936c326db9daf53a9d27151a675fc' 
  AND token = 'uHLP4CREVp5USnHVMWuUik7nw61D/hRohjpXtP9h9Lk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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