Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a2abbe6200f6b9402c641692b274e24b411272f4129146a96ef65a5647bc627c' 
  AND token = 'kHbaTLH/xsMgmVQkKwHFIxjYkePlXcZAUUaxQ4cJvTM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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