Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd6ac5c8d25ee2ae8e70f8003b96f57ea360f3f04968209a8de2529bd1ede1561' 
  AND token = '4rrtC0Sl1RSHhuqih8qCaYqkoTJdcdYPAzmVst17rG0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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