SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '1458468725817a7c2b30c0f65f34f0c5bd11b8afd46597b985121856b2f34b5f' 
  AND token = 'fBZvMRYOhkKmYakBsPyKnDcgIh3Cpsh0sP5xWWj7pfM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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