Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd024dbd2faa4b3c6868c85035c5a37965d909f02dd823155892801ad4c0bd9f1' 
  AND token = 'e1/4VA2OAVOaHADGTvyUwXImJqiYAM0kJc2gGtQHd3Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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