Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6d3721eb0de09aad634a03207bb0e82c77ddd3d9847c1f497eb88c9a9d42752c' 
  AND token = '005l2B1Qki6NktfoFEPkQZ6wYvlB5iZvsxmr8eaiqOg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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