Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '26474bb348800be4b5cfa051bcc5974b33da88040169e8fed47132aa2ac7a8bf' 
  AND token = 'SD4UtdRSku6/UnG7MNnYL7jr5v494ZF/ShM/vgzTP68=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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