Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3c322ba1be4b17bea47b527ab058731d406ec3030af927fdd87e7b519505c3a9' 
  AND token = 'DlqFUNRpJIuts4psnpu0ZoKhE5BbSPBGn4jpcjz3a7Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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