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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b59baf81f8fc66608f25f563c5e546ebcb354fc64d8b1ea9bf3baa993a54f8c0' 
  AND token = 'ptzVn6SzS33FSiuV+HRrawRD7vxpABlsWiH4WqmqJF8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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