Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '2aec4f528e645dd232400ac57f79f05551605dc5cf9a43aed47e2c4d9c09d658' 
  AND token = 'hK5qsDtyvPNY/xFAsWJ5D+uMMmOQXCm0dWAK2rWoWFI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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