Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '553669e4cf193fda75139af8592d7ce156db357615e733ba57a52bed813720f4' 
  AND token = 'b+iWTSC9pKJXcfm/yli6oSL6GAXm5QSAVT5pWmLz8QY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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