Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ca5b9c5b87b83d3d755c8a78beacb80f14385478d2039e66e57536fec38cc3e8' 
  AND token = 'ixKArK0hFU2EXWAUlI36/kW0N/BJ9bRn4cQYRTp2tkM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00063

JSON explain

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