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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b563613e1883d717eeafe4a5bc605d9daada96dc27bf4ea02207af7fbf7614d2' 
  AND token = 'ERkz8SyduHdK1mdbK7/RgLbjE0JVsUI6BF4H/Cp/1WU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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