Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '57da77d51f773f8e3c1b3b08b7144fed31116027e879596de2b97a5b935221f8' 
  AND token = 'pEVoFE+PMCSZ8uLFaVsVBP8oAy1BXIvVStuHsICWB3U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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