Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '961e038632d4177a4324fb2fcb498ad913cf95b66f5df54251cadb6f79933efe' 
  AND token = 'KrmoT3tJ4D/G9S3b9JDj6gyJz9AJFIIBnWKZCKpI7ac=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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