Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '192ad0a5b439eca36deb009e9bc998910ab569ed96367f7aa4bc7d801bdc0189' 
  AND token = 'os4XES5Vui4BKMI17bwf8WCJD4Id5lF8zCUlQnLsjTA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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