Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '673dbc3977110a908c039121529c8ea17b74ef8a7548c60ea44a7b577c031a97' 
  AND token = '+n4Qw1MWmLvE7tplLdwp0po2vGRW16LG+xAylXoXuvo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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