Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dbce81b579140dfabeb9a49899f529e601ea591885ff635f680003c20889500d' 
  AND token = 'U+njC4muFmuUSUu+xNjdjyPwnOHQ9eeWG85T69ufyPc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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