Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'aefe56acc6b7662e009ae26f5d10a331637e81e7fa6bd6892882a35568d7291e' 
  AND token = 'wr6oIjtvTriwDPs6b9GopTnsLLPgwvp8hZtDrXN7zdo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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