Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f00b472010750a73cee0496b92d174ef90f6dedf552d3874142c2e17812fa7a8' 
  AND token = 'UquYtkGeYnHCSb1tP1cO7p1EcJ9Hn7XJxqSVpLWl4bE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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