Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2f5d7fdd947fbe36cf628dfc0274e53cd1a8c01d52e6d9559e389915beffac2c' 
  AND token = 's5CjA/sR0nrgHGTD0Rur6C0is0oQ9MhJN6EG6Cnc4So=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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