Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dfd8007ee0890a041ef83f4c5730ca986a5fd42227c6315feb5bbd6009d9ac40' 
  AND token = 'la9C5apOgqDDcpOrlRP2A554eSRIuh7eWfh4DOEChXg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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