Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '85b9905a805b7debfaac2b4aa8f497910dccfc0d58af33552888e1841a3beacf' 
  AND token = 'K55h3d9YFGi+lIF2NVV8XNy6e4E7LAp64V0beRS74GQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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