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SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'db014203fb7d60e4bbfe8031484ace7e7bf77a4c956ef1f5196414394df60979' 
  AND token = 'Cqm4J48wuN4DBhdnfU06bO3NTflC2/YC9TH6k8I158M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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