Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '1ac3cef299e3aeac8d10c2226a80d1f770932bdbc824219a138f82f9b438d43c' 
  AND token = 'AVsdn2eVGd4oH68GG6XFpD4lvxkrxmU4e/vPKipA/pw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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