Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9b2d04033b26bb730a78eaedb7573122b864f348006e1ab22397e2e98b3a6462' 
  AND token = 'SpKkqM9P9foZaBIj+I8S3OXL2eQ/LZT8csAST+OdD+0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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