Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '04c9d386f4dcfd5c4958873f14072e1d1fc667191fe848d1d4af5016ef917762' 
  AND token = '3igdt+0GHQaNm8vuICnYQB+sWCP5NVjaTtLTON4OvCc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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