Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1a8a501b106a1ffd24528015deb02c73751fa9cbbdc61212cd9f074709b202d7' 
  AND token = 'K+gI1wO0FqjtJXUvmwl8xSgbcXb4EqyU3nGmhCdfPe4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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