Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '99b44237349b224275ff75806899323b4ce5a13eb385b2c3a7b9c4656076cf2c' 
  AND token = 'cZApeMpQ7qXY/oEim6AqXz29MN2jD8XZWCwk8a7PZMs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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