Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '145247091bf4a0e181ab2e2538cac03eb102171768b3dd40537a629bedba520e' 
  AND token = 'uv1vef4yqhqUcwpys8c4vVIBzQlH9l1Zxcw2pX99c4o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00072

JSON explain

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