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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7459b8710b81af017b6a5467385b44f52a491c00dce60e267a79ff5ef106059b' 
  AND token = 'YEjMhAJm40NEZACnA24uGgW33ksXY6YoNRFZEmXhQTw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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