Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'be970c24b5cbe1bad5df825936b51aadc0cd23d0711dc047135727ff674c4378' 
  AND token = 'iwH3vt8FREgjU9XaHrf5VyyBFVs/8WBKbL9vvc0sT5k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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