Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '86865d14875b3e6c14cea17c58bbd56039da522d7c8a88f9109277afd98c3afe' 
  AND token = '5DTeXqrIyMc4a4J77prPOK9akk0Pru3tzbDLBks6TyA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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