Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b98bb1c1c6a7117e36ef79951d5544e8bb9484c70e07cff7cc92cdf1ca7f3614' 
  AND token = 'MQUyz5xsXCKqX5tj3nEd/0wv7lV6k+piEMeGVwt11As=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}