Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd2d73a15f80a7386496258f0390ce0b22b79a6e84c3da2c099ff017ec5d87a99' 
  AND token = 'wfWROoCNwhmWpwMygXp0pjHIt8Xl+hHXgLX9KAosZc8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00064

JSON explain

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