Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '11ba79f943c48951076bbe22788cb7286467794b207614fb4bfc9c1a72b7e334' 
  AND token = 'M4wCin9KNZpPvbYXEt9olLYy7OY6mWW7CRD/4w1cMV0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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