Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '07f37112be2bd6dfe06b43cdd93a822e6ab50ecd1ee8b6cbe1fe673df513c9b4' 
  AND token = 'cCxZqef9kSXP3QEPPWwmBBtAg/3SEhcxHCnI0k0cbww=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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