Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3f475ca0850ad0b61c99f93788c9743ca76659ff58bdb74987bb569ecf8d128c' 
  AND token = 'BWWA3Gscg5mU845/K8wKFL82lDfBV5loI7veny2gUkA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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