Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '522b3bf238098d769646a0f07ea95d3779ae3ed097486d3611f3906415bdbc92' 
  AND token = '7infpdxNYu3uJ6uMZDLiLvON4l4q+HOeoxtsF5mW5eM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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