Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '4f8bef5e65f6ddb2c3b67104595568470715cc031bc4e41331053548e17d74e5' 
  AND token = 'ZTK2hXpaysanzPdcNQEb1mm9yVGaPjuA8iG/fOltpSU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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