Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c5ceff2f64cfb49f52dfb8d29f428ddb2d18759aa1e6311aaf1c29f996f0e2f8' 
  AND token = 'ecGgUsL4ZHUaA2QNaRBgNR9E9pIFJXaJz7XXw8hel9U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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