Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '1e4fd42b41f173c5146fa69013f8f22d0df407ba7f95b121c695ae96251f8ec5' 
  AND token = 'XekknYnYgZm8iPYu8EDqEG4aVg7kpt48q9QLyjY7FPY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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