Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '477ef1199f624183073895c0dceba01bcb9b4b7cab4005434578306299cc2b7c' 
  AND token = 'lId6iQeo5FEq8AkP7vC6C4n0GW+1Y/V0fybu4sAI5ZI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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