SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '4804fdc14340d17cf80e5d004432d71166f03f953cafc2d900441e673b77612f' 
  AND token = 'l2x8G6kjdW8VryLycJkmOJaKYg7DD2Tlof6UqznjPGw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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