Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'a5b06ac8c429e38bb256f65ca3dcbdc08636b585923183336f71408f998d533c' 
  AND token = 'ywGe7hPaNZMkmhVrH3C2Ga0WT+D6udxmvHb5S3JmfYU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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