Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '09eab34efad38e8977a80b362aac0464b19143182bc0101321b8e88b8c07e0cd' 
  AND token = '6WNqk7Id3KeRq1Xay5NDu7U4jqlz7AgqTzN3cwttWPc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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